diff --git a/app/jobs/migrations/batch_update_pays_values_job.rb b/app/jobs/migrations/batch_update_pays_values_job.rb
new file mode 100644
index 000000000..6e9ca4de9
--- /dev/null
+++ b/app/jobs/migrations/batch_update_pays_values_job.rb
@@ -0,0 +1,92 @@
+class Migrations::BatchUpdatePaysValuesJob < ApplicationJob
+  UNUSUAL_COUNTRY_NAME_MATCHER = {
+    "ACORES, MADERE" => "Portugal",
+    "ALASKA" => "États-Unis",
+    "ANTILLES NEERLANDAISES" => "Pays-Bas",
+    "BIELORUSSIE" => "Bélarus",
+    "BONAIRE, SAINT EUSTACHE ET SABA" => "Bonaire, Saint-Eustache et Saba",
+    "BURKINA" => "Burkina Faso",
+    "CAIMANES (ILES)" => "îles Caïmans",
+    "CAMEROUN ET TOGO" => "Cameroun",
+    "CANARIES (ILES)" => "Espagne",
+    "CENTRAFRICAINE (REPUBLIQUE)" => "République centrafricaine",
+    "CHRISTMAS (ILE)" => "Christmas, Île",
+    "CONGO (REPUBLIQUE DEMOCRATIQUE)" => "République démocratique du Congo",
+    "COOK (ILES)" => "îles Cook",
+    "COREE (REPUBLIQUE DE)" => "Corée, République de",
+    "COREE (REPUBLIQUE POPULAIRE DEMOCRATIQUE DE)" => "Corée, République populaire démocratique de",
+    "COREE" => "Corée, République de",
+    "DOMINICAINE (REPUBLIQUE)" => "République dominicaine",
+    "ETATS MALAIS NON FEDERES" => "Malaisie",
+    "FEROE (ILES)" => "îles Féroé",
+    "GUYANE" => "France",
+    "HAWAII (ILES)" => "États-Unis",
+    "HEARD ET MACDONALD (ILES)" => "îles Heard-et-MacDonald",
+    "ILES PORTUGAISES DE L'OCEAN INDIEN" => "Portugal",
+    "IRLANDE, ou EIRE" => "Irlande",
+    "KAMTCHATKA" => "Russie, Fédération de",
+    "LA REUNION" => "Réunion, Île de la",
+    "LABRADOR" => "Canada",
+    "MACEDOINE DU NORD (REPUBLIQUE DE)" => "Macédoine du Nord",
+    "MALOUINES, OU FALKLAND (ILES)" => "Malouines, Îles (Falkland)",
+    "MAN (ILE)" => "Île de Man",
+    "MARIANNES DU NORD (ILES)" => "Îles Mariannes du Nord",
+    "MARSHALL (ILES)" => "Îles Marshall",
+    "OCEAN INDIEN (TERRITOIRE BRITANNIQUE DE L')" => "Royaume-Uni",
+    "PALESTINE (Etat de)" => "Palestine, État de",
+    "POSSESSIONS BRITANNIQUES AU PROCHE-ORIENT" => "Royaume-Uni",
+    "PROVINCES ESPAGNOLES D'AFRIQUE" => "Espagne",
+    "REPUBLIQUE DEMOCRATIQUE ALLEMANDE" => "Allemagne",
+    "REPUBLIQUE FEDERALE D'ALLEMAGNE" => "Allemagne",
+    "RUSSIE" => "Russie, Fédération de",
+    "SAINT-MARTIN" => "Saint-Martin (partie française)",
+    "SAINT-VINCENT-ET-LES GRENADINES" => "Saint-Vincent-et-les-Grenadines",
+    "SAINTE HELENE, ASCENSION ET TRISTAN DA CUNHA" => "Sainte-Hélène, Ascension et Tristan da Cunha",
+    "SALOMON (ILES)" => "Salomon, Îles",
+    "SAMOA OCCIDENTALES" => "Samoa",
+    "SIBERIE" => "Russie, Fédération de",
+    "SOUDAN ANGLO-EGYPTIEN, KENYA, OUGANDA" => "Ouganda",
+    "SYRIE" => "Syrienne, République arabe",
+    "TANGER" => "Maroc",
+    "TCHECOSLOVAQUIE" => "Tchéquie",
+    "TCHEQUE (REPUBLIQUE)" => "Tchéquie",
+    "TERR. DES ETATS-UNIS D'AMERIQUE EN AMERIQUE" => "États-Unis",
+    "TERR. DES ETATS-UNIS D'AMERIQUE EN OCEANIE" => "États-Unis",
+    "TERR. DU ROYAUME-UNI DANS L'ATLANTIQUE SUD" => "Royaume-Uni",
+    "TERRE-NEUVE" => "Canada",
+    "TERRITOIRES DU ROYAUME-UNI AUX ANTILLES" => "Royaume-Uni",
+    "TURKESTAN RUSSE" => "Russie, Fédération de",
+    "TURKS ET CAIQUES (ILES)" => "îles Turques-et-Caïques",
+    "TURQUIE D'EUROPE" => "Turquie",
+    "VATICAN, ou SAINT-SIEGE" => "Saint-Siège (état de la cité du Vatican)",
+    "VIERGES BRITANNIQUES (ILES)" => "Îles Vierges britanniques",
+    "VIERGES DES ETATS-UNIS (ILES)" => "Îles Vierges des États-Unis",
+    "VIET NAM DU NORD" => "Viêt Nam",
+    "VIET NAM DU SUD" => "Viêt Nam",
+    "WALLIS-ET-FUTUNA" => "Wallis et Futuna",
+    "YEMEN (REPUBLIQUE ARABE DU)" => "Yémen",
+    "YEMEN DEMOCRATIQUE" => "Yémen",
+    "ZANZIBAR" => "Tanzanie"
+  }
+
+  private_constant :UNUSUAL_COUNTRY_NAME_MATCHER
+
+  def perform(ids)
+    ids.each do |id|
+      pays_champ = Champs::PaysChamp.find(id)
+      next if pays_champ.valid?
+
+      code = APIGeoService.country_code(pays_champ.value)
+      value = if code.present?
+        APIGeoService.country_name(code)
+      else
+        UNUSUAL_COUNTRY_NAME_MATCHER[pays_champ.value]
+      end
+
+      if value.present? || !pays_champ.required?
+        associated_country_code = APIGeoService.country_code(value)
+        pays_champ.update_columns(value: value, external_id: associated_country_code)
+      end
+    end
+  end
+end
diff --git a/app/models/champs/pays_champ.rb b/app/models/champs/pays_champ.rb
index e0a00ea43..b00402850 100644
--- a/app/models/champs/pays_champ.rb
+++ b/app/models/champs/pays_champ.rb
@@ -21,6 +21,9 @@
 #  type_de_champ_id               :integer
 #
 class Champs::PaysChamp < Champs::TextChamp
+  validates :value, inclusion: APIGeoService.countries.pluck(:name), allow_nil: true, allow_blank: false
+  validates :external_id, inclusion: APIGeoService.countries.pluck(:code), allow_nil: true, allow_blank: false
+
   def for_export
     [name, code]
   end
diff --git a/app/models/prefill_params.rb b/app/models/prefill_params.rb
index 8240ff556..18445185a 100644
--- a/app/models/prefill_params.rb
+++ b/app/models/prefill_params.rb
@@ -38,7 +38,8 @@ class PrefillParams
       TypeDeChamp.type_champs.fetch(:datetime),
       TypeDeChamp.type_champs.fetch(:civilite),
       TypeDeChamp.type_champs.fetch(:yes_no),
-      TypeDeChamp.type_champs.fetch(:checkbox)
+      TypeDeChamp.type_champs.fetch(:checkbox),
+      TypeDeChamp.type_champs.fetch(:pays)
     ]
 
     attr_reader :champ, :value
diff --git a/app/models/type_de_champ.rb b/app/models/type_de_champ.rb
index c9cf55f07..8a8e1c036 100644
--- a/app/models/type_de_champ.rb
+++ b/app/models/type_de_champ.rb
@@ -261,6 +261,7 @@ class TypeDeChamp < ApplicationRecord
       TypeDeChamp.type_champs.fetch(:phone),
       TypeDeChamp.type_champs.fetch(:iban),
       TypeDeChamp.type_champs.fetch(:civilite),
+      TypeDeChamp.type_champs.fetch(:pays),
       TypeDeChamp.type_champs.fetch(:date),
       TypeDeChamp.type_champs.fetch(:datetime),
       TypeDeChamp.type_champs.fetch(:yes_no),
diff --git a/app/models/types_de_champ/prefill_drop_down_list_type_de_champ.rb b/app/models/types_de_champ/prefill_drop_down_list_type_de_champ.rb
index 2d245dd9f..7e3a4ad22 100644
--- a/app/models/types_de_champ/prefill_drop_down_list_type_de_champ.rb
+++ b/app/models/types_de_champ/prefill_drop_down_list_type_de_champ.rb
@@ -3,7 +3,7 @@ class TypesDeChamp::PrefillDropDownListTypeDeChamp < TypesDeChamp::PrefillTypeDe
     if drop_down_other?
       drop_down_list_enabled_non_empty_options.insert(
         0,
-        I18n.t("views.prefill_descriptions.edit.possible_values.drop_down_list_other")
+        I18n.t("views.prefill_descriptions.edit.possible_values.drop_down_list_other_html")
       )
     else
       drop_down_list_enabled_non_empty_options
diff --git a/app/models/types_de_champ/prefill_type_de_champ.rb b/app/models/types_de_champ/prefill_type_de_champ.rb
index 82d20f77a..6b9466b4d 100644
--- a/app/models/types_de_champ/prefill_type_de_champ.rb
+++ b/app/models/types_de_champ/prefill_type_de_champ.rb
@@ -17,7 +17,7 @@ class TypesDeChamp::PrefillTypeDeChamp < SimpleDelegator
   def possible_values
     return [] unless prefillable?
 
-    [I18n.t("views.prefill_descriptions.edit.possible_values.#{type_champ}")]
+    [I18n.t("views.prefill_descriptions.edit.possible_values.#{type_champ}_html")]
   end
 
   def example_value
diff --git a/app/views/prefill_descriptions/_types_de_champs.html.haml b/app/views/prefill_descriptions/_types_de_champs.html.haml
index aa43db426..7321b4bee 100644
--- a/app/views/prefill_descriptions/_types_de_champs.html.haml
+++ b/app/views/prefill_descriptions/_types_de_champs.html.haml
@@ -20,7 +20,8 @@
                 %button.fr-btn.fr-btn--secondary{ disabled: true }
                   = t("views.prefill_descriptions.edit.champ_unavailable")
 
-          = type_de_champ.description
+          %p
+            = type_de_champ.description
 
           %table.table.vertical
             %tbody
diff --git a/config/i18n-tasks.yml b/config/i18n-tasks.yml
index 6579477af..8bcbb962e 100644
--- a/config/i18n-tasks.yml
+++ b/config/i18n-tasks.yml
@@ -108,6 +108,7 @@ ignore_unused:
 - 'views.pagination.*'
 - 'time.formats.default'
 - 'instructeurs.dossiers.filterable_state.*'
+- 'views.prefill_descriptions.edit.possible_values.*'
 # - '{devise,kaminari,will_paginate}.*'
 # - 'simple_form.{yes,no}'
 # - 'simple_form.{placeholders,hints,labels}.*'
diff --git a/config/locales/en.yml b/config/locales/en.yml
index 77dacb55f..0ccb653e8 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -113,18 +113,20 @@ en:
         champ_unavailable: Unavailable
         possible_values:
           title: Values
-          text: A short text
-          textarea: A long text
-          decimal_number: A decimal number
-          integer_number: An integer number
-          email: An email address
-          phone: A phone number
-          iban: An Iban number
-          yes_no: '"true" for Yes, "false" pour No'
-          date: ISO8601 date
-          datetime: ISO8601 datetime
-          checkbox: '"true" to check, "false" to uncheck'
-          drop_down_list_other: Any value
+          text_html: A short text
+          textarea_html: A long text
+          decimal_number_html: A decimal number
+          integer_number_html: An integer number
+          email_html: An email address
+          civilite_html: '"M." for Mister, "Mme" for Madam'
+          phone_html: A phone number
+          iban_html: An Iban number
+          yes_no_html: '"true" for Yes, "false" pour No'
+          checkbox_html: '"true" to check, "false" to uncheck'
+          pays_html: An <a href="https://en.wikipedia.org/wiki/ISO_3166-2" target="_blank">ISO 3166-2 country code</a>
+          date_html: ISO8601 date
+          datetime_html: ISO8601 datetime
+          drop_down_list_other_html: Any value
         examples:
           title: Example
           text: Short text
@@ -135,6 +137,7 @@ en:
           phone: 0612345678
           iban: FR7611315000011234567890138
           yes_no: "true"
+          pays: "FR"
           date: "2023-02-01"
           datetime: "2023-02-01T10:30"
           checkbox: "true"
diff --git a/config/locales/fr.yml b/config/locales/fr.yml
index b9656cf1e..0f06bbc59 100644
--- a/config/locales/fr.yml
+++ b/config/locales/fr.yml
@@ -104,19 +104,20 @@ fr:
         champ_unavailable: Indisponible
         possible_values:
           title: Valeurs
-          text: Un texte court
-          textarea: Un texte long
-          decimal_number: Un nombre décimal
-          integer_number: Un nombre entier
-          email: Une adresse email
-          civilite: '"M." pour Monsieur, "Mme" pour Madame'
-          phone: Un numéro de téléphone
-          iban: Un numéro Iban
-          yes_no: '"true" pour Oui, "false" pour Non'
-          date: Date au format ISO8601
-          datetime: Datetime au format ISO8601
-          checkbox: '"true" pour coché, "false" pour décoché'
-          drop_down_list_other: Toute valeur
+          text_html: Un texte court
+          textarea_html: Un texte long
+          decimal_number_html: Un nombre décimal
+          integer_number_html: Un nombre entier
+          email_html: Une adresse email
+          civilite_html: '"M." pour Monsieur, "Mme" pour Madame'
+          phone_html: Un numéro de téléphone
+          iban_html: Un numéro Iban
+          yes_no_html: '"true" pour Oui, "false" pour Non'
+          checkbox_html: '"true" pour coché, "false" pour décoché'
+          pays_html: Un <a href="https://en.wikipedia.org/wiki/ISO_3166-2" target="_blank">code pays ISO 3166-2</a>
+          datetime_html: Datetime au format ISO8601
+          date_html: Date au format ISO8601
+          drop_down_list_other_html: Toute valeur
         examples:
           title: Exemple
           text: Texte court
@@ -128,6 +129,7 @@ fr:
           iban: FR7611315000011234567890138
           yes_no: "true"
           civilite: "M."
+          pays: "FR"
           date: "2023-02-01"
           datetime: "2023-02-01T10:30"
           checkbox: "true"
diff --git a/config/locales/models/type_de_champ/en.yml b/config/locales/models/type_de_champ/en.yml
index d5cb7a88c..1d781ea42 100644
--- a/config/locales/models/type_de_champ/en.yml
+++ b/config/locales/models/type_de_champ/en.yml
@@ -1,4 +1,4 @@
-fr:
+en:
   activerecord:
     models:
       type_de_champ: 'Field type'
diff --git a/lib/tasks/deployment/20230103170917_normalize_pays_values.rake b/lib/tasks/deployment/20230103170917_normalize_pays_values.rake
new file mode 100644
index 000000000..85b615aaf
--- /dev/null
+++ b/lib/tasks/deployment/20230103170917_normalize_pays_values.rake
@@ -0,0 +1,16 @@
+namespace :after_party do
+  desc 'Deployment task: normalize_pays_values'
+  task normalize_pays_values: :environment do
+    puts "Running deploy task 'normalize_pays_values'"
+
+    # Put your task implementation HERE.
+    Champs::PaysChamp.in_batches do |pays_champs|
+      Migrations::BatchUpdatePaysValuesJob.perform_later(pays_champs.pluck(:id))
+    end
+
+    # Update task as completed.  If you remove the line below, the task will
+    # run with every deploy (or every time you call after_party:run).
+    AfterParty::TaskRecord
+      .create version: AfterParty::TaskRecorder.new(__FILE__).timestamp
+  end
+end
diff --git a/spec/jobs/temporary/batch_update_datetime_values_job_spec.rb b/spec/jobs/migrations/batch_update_datetime_values_job_spec.rb
similarity index 100%
rename from spec/jobs/temporary/batch_update_datetime_values_job_spec.rb
rename to spec/jobs/migrations/batch_update_datetime_values_job_spec.rb
diff --git a/spec/jobs/migrations/batch_update_pays_values_job_spec.rb b/spec/jobs/migrations/batch_update_pays_values_job_spec.rb
new file mode 100644
index 000000000..25531daa6
--- /dev/null
+++ b/spec/jobs/migrations/batch_update_pays_values_job_spec.rb
@@ -0,0 +1,47 @@
+describe Migrations::BatchUpdatePaysValuesJob, type: :job do
+  before do
+    pays_champ.save(validate: false)
+  end
+
+  subject { described_class.perform_now([pays_champ.id]) }
+
+  context "the value is correct" do
+    let(:pays_champ) { build(:champ_pays, value: 'France', external_id: 'FR') }
+
+    it 'does not change it' do
+      subject
+      expect(pays_champ.reload.value).to eq('France')
+      expect(pays_champ.reload.external_id).to eq('FR')
+    end
+  end
+
+  context "the value is incorrect" do
+    let(:pays_champ) { build(:champ_pays, value: 'Incorrect') }
+
+    it 'updates value to nil' do
+      subject
+      expect(pays_champ.reload.value).to be_nil
+      expect(pays_champ.reload.external_id).to be_nil
+    end
+  end
+
+  context "the value is easily cleanable" do
+    let(:pays_champ) { build(:champ_pays, value: 'Vietnam') }
+
+    it 'cleans the value' do
+      subject
+      expect(pays_champ.reload.value).to eq('Viêt Nam')
+      expect(pays_champ.reload.external_id).to eq('VN')
+    end
+  end
+
+  context "the value is hard to clean" do
+    let(:pays_champ) { build(:champ_pays, value: 'CHRISTMAS (ILE)') }
+
+    it 'cleans the value' do
+      subject
+      expect(pays_champ.reload.value).to eq('Christmas, Île')
+      expect(pays_champ.reload.external_id).to eq('CX')
+    end
+  end
+end
diff --git a/spec/models/prefill_params_spec.rb b/spec/models/prefill_params_spec.rb
index 4fb0b1c4e..c9f4cc7c3 100644
--- a/spec/models/prefill_params_spec.rb
+++ b/spec/models/prefill_params_spec.rb
@@ -110,6 +110,7 @@ RSpec.describe PrefillParams do
     it_behaves_like "a champ public value that is authorized", :phone, "value"
     it_behaves_like "a champ public value that is authorized", :iban, "value"
     it_behaves_like "a champ public value that is authorized", :civilite, "M."
+    it_behaves_like "a champ public value that is authorized", :pays, "FR"
     it_behaves_like "a champ public value that is authorized", :date, "2022-12-22"
     it_behaves_like "a champ public value that is authorized", :datetime, "2022-12-22T10:30"
     it_behaves_like "a champ public value that is authorized", :yes_no, "true"
@@ -126,6 +127,7 @@ RSpec.describe PrefillParams do
     it_behaves_like "a champ private value that is authorized", :phone, "value"
     it_behaves_like "a champ private value that is authorized", :iban, "value"
     it_behaves_like "a champ private value that is authorized", :civilite, "M."
+    it_behaves_like "a champ private value that is authorized", :pays, "FR"
     it_behaves_like "a champ private value that is authorized", :date, "2022-12-22"
     it_behaves_like "a champ private value that is authorized", :datetime, "2022-12-22T10:30"
     it_behaves_like "a champ private value that is authorized", :yes_no, "true"
diff --git a/spec/models/type_de_champ_spec.rb b/spec/models/type_de_champ_spec.rb
index a2c6c74e8..0a71d450d 100644
--- a/spec/models/type_de_champ_spec.rb
+++ b/spec/models/type_de_champ_spec.rb
@@ -245,6 +245,7 @@ describe TypeDeChamp do
     it_behaves_like "a prefillable type de champ", :type_de_champ_date
     it_behaves_like "a prefillable type de champ", :type_de_champ_datetime
     it_behaves_like "a prefillable type de champ", :type_de_champ_civilite
+    it_behaves_like "a prefillable type de champ", :type_de_champ_pays
     it_behaves_like "a prefillable type de champ", :type_de_champ_yes_no
     it_behaves_like "a prefillable type de champ", :type_de_champ_checkbox
     it_behaves_like "a prefillable type de champ", :type_de_champ_drop_down_list
@@ -265,7 +266,6 @@ describe TypeDeChamp do
     it_behaves_like "a non-prefillable type de champ", :type_de_champ_mesri
     it_behaves_like "a non-prefillable type de champ", :type_de_champ_carte
     it_behaves_like "a non-prefillable type de champ", :type_de_champ_address
-    it_behaves_like "a non-prefillable type de champ", :type_de_champ_pays
     it_behaves_like "a non-prefillable type de champ", :type_de_champ_regions
     it_behaves_like "a non-prefillable type de champ", :type_de_champ_departements
     it_behaves_like "a non-prefillable type de champ", :type_de_champ_siret
diff --git a/spec/models/types_de_champ/prefill_drop_down_list_type_de_champ_spec.rb b/spec/models/types_de_champ/prefill_drop_down_list_type_de_champ_spec.rb
index c1a8d17d7..fc7d4e573 100644
--- a/spec/models/types_de_champ/prefill_drop_down_list_type_de_champ_spec.rb
+++ b/spec/models/types_de_champ/prefill_drop_down_list_type_de_champ_spec.rb
@@ -9,7 +9,7 @@ RSpec.describe TypesDeChamp::PrefillDropDownListTypeDeChamp do
 
       it {
         expect(possible_values).to match(
-          [I18n.t("views.prefill_descriptions.edit.possible_values.drop_down_list_other")] + type_de_champ.drop_down_list_enabled_non_empty_options
+          [I18n.t("views.prefill_descriptions.edit.possible_values.drop_down_list_other_html")] + type_de_champ.drop_down_list_enabled_non_empty_options
         )
       }
     end
diff --git a/spec/models/types_de_champ/prefill_type_de_champ_spec.rb b/spec/models/types_de_champ/prefill_type_de_champ_spec.rb
index 71faa26d5..28695be9a 100644
--- a/spec/models/types_de_champ/prefill_type_de_champ_spec.rb
+++ b/spec/models/types_de_champ/prefill_type_de_champ_spec.rb
@@ -38,7 +38,7 @@ RSpec.describe TypesDeChamp::PrefillTypeDeChamp, type: :model do
     context 'when the type de champ is prefillable' do
       let(:type_de_champ) { build(:type_de_champ_email) }
 
-      it { expect(possible_values).to match([I18n.t("views.prefill_descriptions.edit.possible_values.#{type_de_champ.type_champ}")]) }
+      it { expect(possible_values).to match([I18n.t("views.prefill_descriptions.edit.possible_values.#{type_de_champ.type_champ}_html")]) }
     end
   end
 
diff --git a/spec/services/dossier_projection_service_spec.rb b/spec/services/dossier_projection_service_spec.rb
index fbf7efd24..6d557c442 100644
--- a/spec/services/dossier_projection_service_spec.rb
+++ b/spec/services/dossier_projection_service_spec.rb
@@ -215,7 +215,7 @@ describe DossierProjectionService do
             dossier.champs_public.first.update(value: "qu'il est beau mon pays")
           end
 
-          it { is_expected.to eq("qu'il est beau mon pays") }
+          it { is_expected.to eq("") }
         end
       end
     end