diff --git a/.changeset/datepicker-week-numbers.md b/.changeset/datepicker-week-numbers.md
new file mode 100644
index 000000000..c1329bbf6
--- /dev/null
+++ b/.changeset/datepicker-week-numbers.md
@@ -0,0 +1,7 @@
+---
+"@tabler/core": minor
+"@tabler/preview": patch
+"@tabler/docs": patch
+---
+
+Added the `weekNumbers` option to `Datepicker` to show the week number in front of each row.
diff --git a/core/js/src/datepicker.ts b/core/js/src/datepicker.ts
index 903487190..8e7ae8e0b 100644
--- a/core/js/src/datepicker.ts
+++ b/core/js/src/datepicker.ts
@@ -100,6 +100,8 @@ type ComponentConfig = {
   selectedDates: string[]
   selectionMode: DateMode
   placement: PositionToInput
+  /** show the ISO week number in front of each row */
+  weekNumbers: boolean
   /** pass-through for any Vanilla Calendar Pro option */
   vcpOptions: object
 }
@@ -122,6 +124,7 @@ const Default: ComponentConfig = {
   selectedDates: [],
   selectionMode: 'single',
   placement: 'left',
+  weekNumbers: false,
   vcpOptions: {},
 }
 
@@ -139,6 +142,7 @@ const DefaultType: Record<keyof ComponentConfig, string> = {
   selectedDates: 'array',
   selectionMode: 'string',
   placement: 'string',
+  weekNumbers: 'boolean',
   vcpOptions: 'object',
 }
 
@@ -605,6 +609,7 @@ class Datepicker extends BaseComponent {
       selectionDatesMode: this._config.selectionMode,
       selectedDates: this._config.selectedDates,
       displayMonthsCount: this._config.displayMonthsCount,
+      enableWeekNumbers: this._config.weekNumbers || Boolean(vcpOptions.enableWeekNumbers),
       type: this._config.displayMonthsCount > 1 ? 'multiple' : 'default',
       selectedTheme: vcpTheme,
       themeAttrDetect: '[data-bs-theme]',
diff --git a/core/js/tests/unit/datepicker.spec.ts b/core/js/tests/unit/datepicker.spec.ts
index 3078bdbcc..4cb64ccb1 100644
--- a/core/js/tests/unit/datepicker.spec.ts
+++ b/core/js/tests/unit/datepicker.spec.ts
@@ -115,6 +115,24 @@ describe('Datepicker', () => {
       expect(instance._config.firstWeekday).toBe(0)
     })
 
+    it('should turn week numbers on from a data attribute', () => {
+      fixtureEl.innerHTML = '<input type="text" data-bs-toggle="datepicker" data-bs-week-numbers="true">'
+
+      const instance = new Datepicker(input())
+
+      expect(Datepicker.Default.weekNumbers).toBe(false)
+      expect(instance._config.weekNumbers).toBe(true)
+      expect(instance._buildCalendarOptions().enableWeekNumbers).toBe(true)
+    })
+
+    it('should keep week numbers enabled through vcpOptions', () => {
+      fixtureEl.innerHTML = '<input type="text" data-bs-toggle="datepicker">'
+
+      const instance = new Datepicker(input(), { vcpOptions: { enableWeekNumbers: true } })
+
+      expect(instance._buildCalendarOptions().enableWeekNumbers).toBe(true)
+    })
+
     it('should let a passed config win over data attributes', () => {
       fixtureEl.innerHTML = '<input type="text" data-bs-toggle="datepicker" data-bs-first-weekday="0">'
 
diff --git a/core/scss/ui/_datepicker.scss b/core/scss/ui/_datepicker.scss
index 21345d705..ff51931e0 100644
--- a/core/scss/ui/_datepicker.scss
+++ b/core/scss/ui/_datepicker.scss
@@ -19,6 +19,8 @@
   --calendar-font-size: #{$datepicker-calendar-font-size};
   --calendar-header-font-weight: #{$datepicker-calendar-header-font-weight};
   --calendar-weekday-color: var(--secondary);
+  --calendar-week-number-color: var(--secondary);
+  --calendar-week-number-border-color: var(--border-color);
   --calendar-day-hover-bg: var(--hover-bg);
   --calendar-day-selected-bg: var(--primary);
   --calendar-day-selected-color: var(--primary-fg);
@@ -151,6 +153,12 @@
   }
 }
 
+// Holds the week numbers column, when enabled, next to the month
+[data-vc='wrapper'] {
+  display: flex;
+  flex-grow: 1;
+}
+
 [data-vc='content'] {
   display: flex;
   flex-grow: 1;
@@ -252,6 +260,46 @@ button[data-vc-week-day] {
   cursor: pointer;
 }
 
+// Week numbers: a column in front of the month, with a title that lines up
+// with the weekday header and one number for each row of dates.
+[data-vc-week='numbers'] {
+  display: flex;
+  flex-direction: column;
+  padding-inline-end: 0.5rem;
+  margin-inline-end: 0.5rem;
+  border-inline-end: var(--border-width) solid var(--calendar-week-number-border-color);
+}
+
+[data-vc-week-numbers='title'] {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  margin-bottom: 0.5rem;
+  font-size: var(--calendar-day-font-size);
+  font-weight: var(--calendar-header-font-weight);
+  line-height: 1rem;
+  color: var(--calendar-week-number-color);
+}
+
+[data-vc-week-numbers='content'] {
+  display: grid;
+  grid-auto-rows: calc(var(--calendar-day-size) + 0.25rem);
+  align-items: center;
+  justify-items: center;
+}
+
+[data-vc-week-number] {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  width: 100%;
+  min-width: var(--calendar-day-size);
+  font-size: var(--calendar-day-font-size);
+  font-weight: $font-weight-normal;
+  line-height: 1rem;
+  color: var(--calendar-week-number-color);
+}
+
 // Dates grid
 [data-vc='dates'] {
   pointer-events: none;
diff --git a/docs/content/ui/plugins/date-picker.mdx b/docs/content/ui/plugins/date-picker.mdx
index 150bd2c37..b17a14933 100644
--- a/docs/content/ui/plugins/date-picker.mdx
+++ b/docs/content/ui/plugins/date-picker.mdx
@@ -131,6 +131,15 @@ The week starts on Monday. Set `data-bs-first-weekday="0"` to start it on Sunday
 <input type="text" class="form-control" id="datepicker-sunday" data-bs-toggle="datepicker" autocomplete="off" data-bs-first-weekday="0" placeholder="Select a date" />
 </Example>
 
+### Week numbers
+
+Add `data-bs-week-numbers="true"` to show the week number in front of each row. Use it where people plan by week, for example delivery dates or sprints.
+
+<Example>
+<label class="form-label" for="datepicker-week-numbers">Delivery date</label>
+<input type="text" class="form-control" id="datepicker-week-numbers" data-bs-toggle="datepicker" autocomplete="off" data-bs-week-numbers="true" placeholder="Select a date" />
+</Example>
+
 ### Placement
 
 The popup lines up with the left edge of the field. Set `data-bs-placement` to `center`, `right` or `auto` to change that.
@@ -224,6 +233,7 @@ const datepicker = new tabler.Datepicker(document.getElementById('my-date'), {
 | `selectedDates` | array | `[]` | Preselected dates as `YYYY-MM-DD`. |
 | `selectionMode` | string | `'single'` | `'single'`, `'multiple'` or `'multiple-ranged'`. |
 | `placement` | string | `'left'` | Where the popup lines up with the field: `'left'`, `'center'`, `'right'` or `'auto'`. |
+| `weekNumbers` | boolean | `false` | Show the week number in front of each row. |
 | `datepickerTheme` | string | `null` | Force the popup's theme to `'light'`, `'dark'` or `'auto'`. By default it follows the nearest `[data-bs-theme]`. |
 | `vcpOptions` | object | `{}` | Any [Vanilla Calendar Pro option](https://vanilla-calendar.pro/docs/reference/settings), passed straight through. |
 
diff --git a/preview/pages/datepicker.astro b/preview/pages/datepicker.astro
index e20f0f42a..e7d38c5ce 100644
--- a/preview/pages/datepicker.astro
+++ b/preview/pages/datepicker.astro
@@ -108,6 +108,17 @@ const rangeEnd = `${year}-06-18`
       </Card>
     </div>
 
+    <div class="col-md-6 col-lg-4">
+      <Card>
+        <CardBody>
+          <CardTitle>Week numbers</CardTitle>
+          <CardSubtitle>Add <code>data-bs-week-numbers="true"</code> to show the week number in front of each row.</CardSubtitle>
+          <label class="form-label" for="datepicker-week-numbers">Delivery date</label>
+          <Datepicker id="week-numbers" weekNumbers />
+        </CardBody>
+      </Card>
+    </div>
+
     <div class="col-md-6 col-lg-4">
       <Card>
         <CardBody>
@@ -187,6 +198,16 @@ const rangeEnd = `${year}-06-18`
       </Card>
     </div>
 
+    <div class="col-md-6 col-lg-4">
+      <Card>
+        <CardBody>
+          <CardTitle>Inline with week numbers</CardTitle>
+          <CardSubtitle>Week numbers work in an inline calendar too, and with every selection mode.</CardSubtitle>
+          <Datepicker id="inline-week-numbers" inline weekNumbers selectionMode="multiple-ranged" selectedDates={[rangeStart, rangeEnd]} />
+        </CardBody>
+      </Card>
+    </div>
+
     <div class="col-md-12 col-lg-8">
       <Card>
         <CardBody>
diff --git a/shared/ui/Datepicker.astro b/shared/ui/Datepicker.astro
index 56fd5fed4..7d6618138 100644
--- a/shared/ui/Datepicker.astro
+++ b/shared/ui/Datepicker.astro
@@ -25,6 +25,8 @@ interface Props {
   /** 0 = Sunday, 1 = Monday */
   firstWeekday?: 0 | 1 | 2 | 3 | 4 | 5 | 6
   placement?: 'left' | 'center' | 'right' | 'auto'
+  /** show the week number in front of each row */
+  weekNumbers?: boolean
   /** name of the hidden input an inline calendar submits with a form */
   name?: string
 }
@@ -43,6 +45,7 @@ const {
   dateMax,
   firstWeekday,
   placement,
+  weekNumbers = false,
   name,
 } = Astro.props
 
@@ -58,6 +61,7 @@ const dataAttributes = {
   'data-bs-date-max': dateMax,
   'data-bs-first-weekday': firstWeekday,
   'data-bs-placement': placement,
+  'data-bs-week-numbers': weekNumbers ? 'true' : undefined,
 }
 
 ---