diff --git a/src/components/DeleteModal.test.tsx b/src/components/DeleteModal.test.tsx
new file mode 100644
index 0000000..24fda81
--- /dev/null
+++ b/src/components/DeleteModal.test.tsx
@@ -0,0 +1,42 @@
+import { fireEvent, render, screen } from '@testing-library/react'
+import { describe, expect, it, vi } from 'vitest'
+import DeleteModal from './DeleteModal'
+
+describe('DeleteModal', () => {
+  it('renders nothing when closed', () => {
+    render(<DeleteModal open={false} title="Courses" onConfirm={vi.fn()} onCancel={vi.fn()} />)
+
+    expect(screen.queryByRole('dialog')).not.toBeInTheDocument()
+  })
+
+  it('renders the dialog with the note title when open', () => {
+    render(<DeleteModal open title="Courses" onConfirm={vi.fn()} onCancel={vi.fn()} />)
+
+    expect(screen.getByRole('dialog', { name: 'Supprimer la note ?' })).toBeInTheDocument()
+    expect(screen.getByText(/Courses/)).toBeInTheDocument()
+  })
+
+  it('shows a placeholder when the note has no title', () => {
+    render(<DeleteModal open title="" onConfirm={vi.fn()} onCancel={vi.fn()} />)
+
+    expect(screen.getByText(/Sans titre/)).toBeInTheDocument()
+  })
+
+  it('calls onConfirm when the confirm button is clicked', () => {
+    const onConfirm = vi.fn()
+    render(<DeleteModal open title="Courses" onConfirm={onConfirm} onCancel={vi.fn()} />)
+
+    fireEvent.click(screen.getByRole('button', { name: 'Supprimer' }))
+
+    expect(onConfirm).toHaveBeenCalled()
+  })
+
+  it('calls onCancel when the cancel button is clicked', () => {
+    const onCancel = vi.fn()
+    render(<DeleteModal open title="Courses" onConfirm={vi.fn()} onCancel={onCancel} />)
+
+    fireEvent.click(screen.getByRole('button', { name: 'Annuler' }))
+
+    expect(onCancel).toHaveBeenCalled()
+  })
+})
diff --git a/src/components/DeleteModal.tsx b/src/components/DeleteModal.tsx
new file mode 100644
index 0000000..d44c702
--- /dev/null
+++ b/src/components/DeleteModal.tsx
@@ -0,0 +1,44 @@
+interface DeleteModalProps {
+  open: boolean
+  title: string
+  onConfirm: () => void
+  onCancel: () => void
+}
+
+function DeleteModal({ open, title, onConfirm, onCancel }: DeleteModalProps) {
+  if (!open) return null
+
+  return (
+    <div className="fixed inset-0 bg-black/40 flex items-center justify-center p-4 z-50">
+      <div
+        role="dialog"
+        aria-modal="true"
+        aria-labelledby="delete-confirm-title"
+        className="w-full max-w-sm bg-white rounded-lg p-5 flex flex-col gap-4"
+      >
+        <h2 id="delete-confirm-title" className="text-lg font-semibold">
+          Supprimer la note ?
+        </h2>
+        <p className="text-gray-600">{title || 'Sans titre'} sera définitivement supprimée.</p>
+        <div className="flex justify-end gap-3">
+          <button
+            type="button"
+            onClick={onCancel}
+            className="px-4 py-2 rounded border border-gray-300 text-gray-600"
+          >
+            Annuler
+          </button>
+          <button
+            type="button"
+            onClick={onConfirm}
+            className="px-4 py-2 rounded bg-red-600 text-white"
+          >
+            Supprimer
+          </button>
+        </div>
+      </div>
+    </div>
+  )
+}
+
+export default DeleteModal
diff --git a/src/components/NoteEditor.test.tsx b/src/components/NoteEditor.test.tsx
index 58b44e9..22edaca 100644
--- a/src/components/NoteEditor.test.tsx
+++ b/src/components/NoteEditor.test.tsx
@@ -7,8 +7,9 @@ const note: Note = { id: 42, title: 'Courses', content: 'Lait\nOeufs' }
 
 const renderEditor = (overrides: Partial<Note> = {}) => {
   const onUpdate = vi.fn()
-  render(<NoteEditor note={{ ...note, ...overrides }} onUpdate={onUpdate} />)
-  return { onUpdate }
+  const onDelete = vi.fn()
+  render(<NoteEditor note={{ ...note, ...overrides }} onUpdate={onUpdate} onDelete={onDelete} />)
+  return { onUpdate, onDelete }
 }
 
 describe('NoteEditor', () => {
@@ -70,4 +71,33 @@ describe('NoteEditor', () => {
     expect(onUpdate).not.toHaveBeenCalled()
     expect(screen.getByText('Courses')).toBeInTheDocument()
   })
+
+  it('opens the delete confirmation when the × button is clicked', () => {
+    renderEditor()
+    expect(screen.queryByRole('dialog')).not.toBeInTheDocument()
+
+    fireEvent.click(screen.getByRole('button', { name: 'Supprimer la note' }))
+
+    expect(screen.getByRole('dialog', { name: 'Supprimer la note ?' })).toBeInTheDocument()
+  })
+
+  it('deletes the note after confirmation', () => {
+    const { onDelete } = renderEditor()
+
+    fireEvent.click(screen.getByRole('button', { name: 'Supprimer la note' }))
+    fireEvent.click(screen.getByRole('button', { name: 'Supprimer' }))
+
+    expect(onDelete).toHaveBeenCalledWith(42)
+    expect(screen.queryByRole('dialog')).not.toBeInTheDocument()
+  })
+
+  it('does not delete when the confirmation is cancelled', () => {
+    const { onDelete } = renderEditor()
+
+    fireEvent.click(screen.getByRole('button', { name: 'Supprimer la note' }))
+    fireEvent.click(screen.getByRole('button', { name: 'Annuler' }))
+
+    expect(onDelete).not.toHaveBeenCalled()
+    expect(screen.queryByRole('dialog')).not.toBeInTheDocument()
+  })
 })
diff --git a/src/components/NoteEditor.tsx b/src/components/NoteEditor.tsx
index 9769b50..cb73a25 100644
--- a/src/components/NoteEditor.tsx
+++ b/src/components/NoteEditor.tsx
@@ -1,13 +1,16 @@
 import { useState } from 'react'
 import type { Note } from '../types'
+import DeleteModal from './DeleteModal'
 
 interface NoteEditorProps {
   note: Note
   onUpdate: (id: number, patch: Partial<Pick<Note, 'title' | 'content'>>) => void
+  onDelete: (id: number) => void
 }
 
-function NoteEditor({ note, onUpdate }: NoteEditorProps) {
+function NoteEditor({ note, onUpdate, onDelete }: NoteEditorProps) {
   const [editing, setEditing] = useState(false)
+  const [confirmDelete, setConfirmDelete] = useState(false)
   const [title, setTitle] = useState(note.title)
   const [content, setContent] = useState(note.content)
 
@@ -71,7 +74,17 @@ function NoteEditor({ note, onUpdate }: NoteEditorProps) {
 
   return (
     <article className="flex flex-col gap-4">
-      <h2 className="text-2xl font-semibold">{note.title || 'Sans titre'}</h2>
+      <div className="flex items-start justify-between gap-4">
+        <h2 className="text-2xl font-semibold">{note.title || 'Sans titre'}</h2>
+        <button
+          type="button"
+          onClick={() => setConfirmDelete(true)}
+          aria-label="Supprimer la note"
+          className="px-2 py-1 rounded text-gray-600 hover:text-red-600"
+        >
+          ×
+        </button>
+      </div>
       <p className="whitespace-pre-wrap">
         {note.content || <span className="text-gray-400 italic">Note vide</span>}
       </p>
@@ -84,6 +97,15 @@ function NoteEditor({ note, onUpdate }: NoteEditorProps) {
           Éditer
         </button>
       </div>
+      <DeleteModal
+        open={confirmDelete}
+        title={note.title}
+        onConfirm={() => {
+          setConfirmDelete(false)
+          onDelete(note.id)
+        }}
+        onCancel={() => setConfirmDelete(false)}
+      />
     </article>
   )
 }