diff --git a/app/components/procedure_draft_warning_component.rb b/app/components/procedure_draft_warning_component.rb
new file mode 100644
index 000000000..10c409600
--- /dev/null
+++ b/app/components/procedure_draft_warning_component.rb
@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+
+class ProcedureDraftWarningComponent < ApplicationComponent
+  attr_reader :revision
+  attr_reader :current_administrateur
+  attr_reader :extra_class_names
+
+  def initialize(revision:, current_administrateur:, extra_class_names: nil)
+    @revision = revision
+    @current_administrateur = current_administrateur
+    @extra_class_names = extra_class_names
+  end
+
+  def render?
+    revision.draft?
+  end
+
+  def admin?
+    current_administrateur.present? && revision.procedure.administrateurs.include?(current_administrateur)
+  end
+end
diff --git a/app/components/procedure_draft_warning_component/procedure_draft_warning_component.en.yml b/app/components/procedure_draft_warning_component/procedure_draft_warning_component.en.yml
new file mode 100644
index 000000000..6f8dc61bb
--- /dev/null
+++ b/app/components/procedure_draft_warning_component/procedure_draft_warning_component.en.yml
@@ -0,0 +1,13 @@
+---
+en:
+  title: Procedure in testing
+  intro_procedure_brouillon_html: This procedure is currently in <b>testing</b>
+  intro_revision_draft_html: This page allows you to <b>test</b> a new version of the procedure
+  body_general_html: |
+    and this page is reserved for the administration in charge of its deployment.
+    If you start or submit a file, it may be <b>deleted at any time</b> without notice, even if it is accepted later.
+  body_user: |
+    If this link was shared with you, please contact the service in charge of this procedure
+    to obtain the public link for the procedure in order to submit your application.
+  body_admin_procedure_brouillon: Do not share this link with your users. When you publish the procedure, you will access the public link for the procedure to be shared.
+  body_admin_revision_draft: Do not share this link with your users, but rather the public link for the procedure displayed in your administrator dashboard.
diff --git a/app/components/procedure_draft_warning_component/procedure_draft_warning_component.fr.yml b/app/components/procedure_draft_warning_component/procedure_draft_warning_component.fr.yml
new file mode 100644
index 000000000..5b0bc7f0f
--- /dev/null
+++ b/app/components/procedure_draft_warning_component/procedure_draft_warning_component.fr.yml
@@ -0,0 +1,13 @@
+---
+fr:
+  title: Démarche en test
+  intro_procedure_brouillon_html: Cette démarche est actuellement en <b>test</b>
+  intro_revision_draft_html: Cette page permet de <b>tester</b> une nouvelle version de la démarche
+  body_general_html: |
+    et cette page est réservée à l’administration en charge de son déploiement.
+    Si vous commencez ou déposez un dossier, il pourra être <b>supprimé à tout moment</b> et sans préavis, même après avoir été accepté.
+  body_user: |
+    Si ce lien vous a été communiqué, contactez le service en charge de cette démarche
+    pour obtenir le lien public de la démarche afin de déposer votre dossier.
+  body_admin_procedure_brouillon: Ne communiquez pas ce lien à vos usagers. Lorsque vous publierez la démarche, vous accéderez au lien public de la démarche à communiquer.
+  body_admin_revision_draft: Ne communiquez pas ce lien à vos usagers, mais le lien public de la démarche affiché dans votre tableau de bord administrateur.
diff --git a/app/components/procedure_draft_warning_component/procedure_draft_warning_component.html.haml b/app/components/procedure_draft_warning_component/procedure_draft_warning_component.html.haml
new file mode 100644
index 000000000..929b1e378
--- /dev/null
+++ b/app/components/procedure_draft_warning_component/procedure_draft_warning_component.html.haml
@@ -0,0 +1,10 @@
+= render Dsfr::AlertComponent.new(state: :warning, extra_class_names:, title: t(".title")) do |c|
+  - c.with_body do
+    %p
+      = revision.procedure.brouillon? ? t(".intro_procedure_brouillon_html") : t(".intro_revision_draft_html")
+      = t(".body_general_html")
+
+    - if admin?
+      %p= revision.procedure.brouillon? ? t(".body_admin_procedure_brouillon") : t(".body_admin_revision_draft")
+    - else
+      %p= t(".body_user")
diff --git a/app/views/commencer/show.html.haml b/app/views/commencer/show.html.haml
index 55b7a35c9..545789f98 100644
--- a/app/views/commencer/show.html.haml
+++ b/app/views/commencer/show.html.haml
@@ -13,7 +13,11 @@
                 #{Current.application_name}
           %li= link_to t('views.shared.account.already_user'), commencer_sign_in_path(path: @procedure.path, prefill_token: @prefilled_dossier&.prefill_token), class: 'fr-btn fr-btn--secondary'
 
+    = render ProcedureDraftWarningComponent.new(revision: @revision, current_administrateur:, extra_class_names: "fr-mb-2w")
+
   - else
+    = render ProcedureDraftWarningComponent.new(revision: @revision, current_administrateur:, extra_class_names: "fr-mb-2w")
+
     - if @prefilled_dossier
       = render Dsfr::CalloutComponent.new(title: t(".prefilled_draft"), heading_level: 'h2') do |c|
         - c.with_body do
diff --git a/spec/views/commencer/show.html.haml_spec.rb b/spec/views/commencer/show.html.haml_spec.rb
index 571654477..bcda8b893 100644
--- a/spec/views/commencer/show.html.haml_spec.rb
+++ b/spec/views/commencer/show.html.haml_spec.rb
@@ -7,10 +7,15 @@ RSpec.describe 'commencer/show', type: :view do
   let(:drafts) { [] }
   let(:not_drafts) { [] }
   let(:preview_dossiers) { dossiers.take(3) }
+  let(:user) { nil }
+
+  before do
+    allow(view).to receive(:current_administrateur).and_return(user&.administrateur)
+  end
 
   before do
     assign(:procedure, procedure)
-    assign(:revision, procedure.published_revision)
+    assign(:revision, procedure.active_revision)
     assign(:dossiers, dossiers)
     assign(:drafts, drafts)
     assign(:not_drafts, not_drafts)
@@ -25,8 +30,6 @@ RSpec.describe 'commencer/show', type: :view do
   subject { render }
 
   context 'when no user is signed in' do
-    let(:user) { nil }
-
     it 'renders sign-in and sign-up links' do
       subject
       expect(rendered).to have_link('Créer un compte')
@@ -98,4 +101,35 @@ RSpec.describe 'commencer/show', type: :view do
       end
     end
   end
+
+  context "procedure is draft" do
+    let(:procedure) { create(:procedure, :draft) }
+    let(:user) { create :user }
+
+    it 'renders a warning' do
+      subject
+      expect(rendered).to have_text("Cette démarche est actuellement en test")
+    end
+
+    context "when user is admin" do
+      let(:user) { procedure.administrateurs.first.user }
+
+      it "renders warning about draft" do
+        subject
+        expect(rendered).to have_text("Cette démarche est actuellement en test")
+        expect(rendered).to have_text("Ne communiquez pas ce lien")
+      end
+    end
+  end
+
+  context "revision is draft" do
+    before {
+      assign(:revision, procedure.draft_revision)
+    }
+
+    it "renders warning about draft" do
+      subject
+      expect(rendered).to have_text("Démarche en test")
+    end
+  end
 end