diff --git a/app/controllers/administrateurs/procedures_controller.rb b/app/controllers/administrateurs/procedures_controller.rb
index 62718fc3d..a031342a4 100644
--- a/app/controllers/administrateurs/procedures_controller.rb
+++ b/app/controllers/administrateurs/procedures_controller.rb
@@ -413,7 +413,7 @@ module Administrateurs
       procedures_result = Procedure.select(:id).left_joins(:procedures_zones).distinct.publiees_ou_closes
       procedures_result = procedures_result.where(procedures_zones: { zone_id: filter.zone_ids }) if filter.zone_ids.present?
       procedures_result = procedures_result.where(aasm_state: filter.statuses) if filter.statuses.present?
-      procedures_result = procedures_result.where("? = ANY(tags)", filter.tag) if filter.tag.present?
+      procedures_result = procedures_result.where("tags @> ARRAY[?]::text[]", filter.tags) if filter.tags.present?
       procedures_result = procedures_result.where('published_at >= ?', filter.from_publication_date) if filter.from_publication_date.present?
       procedures_result = procedures_result.where('unaccent(libelle) ILIKE unaccent(?)', "%#{filter.libelle}%") if filter.libelle.present?
       procedures_sql = procedures_result.to_sql
diff --git a/app/models/procedures_filter.rb b/app/models/procedures_filter.rb
index ac29caf79..048d632d2 100644
--- a/app/models/procedures_filter.rb
+++ b/app/models/procedures_filter.rb
@@ -5,7 +5,7 @@ class ProceduresFilter
 
   def initialize(admin, params)
     @admin = admin
-    @params = params.permit(:page, :libelle, :email, :from_publication_date, :tag, zone_ids: [], statuses: [])
+    @params = params.permit(:page, :libelle, :email, :from_publication_date, tags: [], zone_ids: [], statuses: [])
   end
 
   def admin_zones
@@ -28,8 +28,8 @@ class ProceduresFilter
     params[:statuses].compact_blank if params[:statuses].present?
   end
 
-  def tag
-    params[:tag].presence
+  def tags
+    params[:tags].compact_blank.uniq if params[:tags].present?
   end
 
   def from_publication_date
@@ -72,7 +72,7 @@ class ProceduresFilter
     filters << email
     filters << "from-#{from_publication_date}" if from_publication_date
     filters << statuses
-    filters << tag
+    filters << tags
     filters.compact.join('-')
   end
 end
diff --git a/app/views/administrateurs/procedures/all.html.haml b/app/views/administrateurs/procedures/all.html.haml
index 5552cf704..5cbe152a0 100644
--- a/app/views/administrateurs/procedures/all.html.haml
+++ b/app/views/administrateurs/procedures/all.html.haml
@@ -5,6 +5,8 @@
         = hidden_field_tag 'zone_ids[]', zone_id, id: "zone_#{zone_id}"
       - @filter.statuses&.each do |status|
         = hidden_field_tag 'statuses[]', status, id: "status_#{status}"
+      - @filter.tags&.each do|tag|
+        = hidden_field_tag 'tags[]', tag, id: "tag_#{tag}"
       = hidden_field_tag 'from_publication_date', @filter.from_publication_date if @filter.from_publication_date.present?
 
       = f.label :libelle, 'Rechercher des démarches par libellé', class: 'fr-label'
@@ -28,10 +30,11 @@
         .selected-statuses.fr-mb-2w
           - @filter.statuses.each do |status|
             = link_to status, all_admin_procedures_path(@filter.without(:statuses, status)), class: 'fr-tag fr-tag--dismiss fr-mb-1w'
-      - if @filter.tag.present?
+      - if @filter.tags.present?
         .selected-tag.fr-mb-2w
-          = link_to @filter.tag, all_admin_procedures_path(@filter.without(:tag)), class: 'fr-tag fr-tag--dismiss fr-mb-1w'
-
+          - @filter.tags.each do |tag|
+            = link_to tag, all_admin_procedures_path(@filter.without(:tags, tag)), class: 'fr-tag fr-tag--dismiss fr-mb-1w'
+            - params[:tags].delete(tag)
       - if @filter.from_publication_date.present?
         .selected-from-publication-date.fr-mb-2w
           = link_to "Depuis #{l(@filter.from_publication_date)}", all_admin_procedures_path(@filter.without(:from_publication_date)), class: 'fr-tag fr-tag--dismiss fr-mb-1w'
diff --git a/app/views/layouts/all.html.haml b/app/views/layouts/all.html.haml
index 1bc899b74..88e37c772 100644
--- a/app/views/layouts/all.html.haml
+++ b/app/views/layouts/all.html.haml
@@ -71,11 +71,13 @@
                       Tags
                   .fr-ml-1w.hidden{ 'data-expand-target': 'content' }
                     %div
-                      = f.search_field :tag, placeholder: 'Choisissez un tag', list: 'tags_list', class: 'fr-input', data: { no_autosubmit: 'input', turbo_force: true }
+                      = f.search_field :tags, placeholder: 'Choisissez un tag', list: 'tags_list', class: 'fr-input', data: { no_autosubmit: 'input', turbo_force: true }, multiple: true
                       %datalist#tags_list
                         - Procedure.tags.each do |tag|
                           %option{ value: tag }
-
+                      - if @filter.tags.present?
+                        - @filter.tags.each do |tag|
+                          = f.hidden_field :tags, value: tag, multiple: true, id: "tag-#{tag.tr(' ', '_')}"
         .fr-col-9
           = yield(:results)
 = render template: 'layouts/application'