diff --git a/test/test_utils.py b/test/test_utils.py
index 0ee5c58fa8..180ede6240 100644
--- a/test/test_utils.py
+++ b/test/test_utils.py
@@ -924,6 +924,7 @@ class TestUtil(unittest.TestCase):
         self.assertEqual(month_by_name(None), None)
         self.assertEqual(month_by_name('December', 'en'), 12)
         self.assertEqual(month_by_name('décembre', 'fr'), 12)
+        self.assertEqual(month_by_name('desember', 'is'), 12)
         self.assertEqual(month_by_name('December'), 12)
         self.assertEqual(month_by_name('décembre'), None)
         self.assertEqual(month_by_name('Unknown', 'unknown'), None)
diff --git a/yt_dlp/extractor/_extractors.py b/yt_dlp/extractor/_extractors.py
index 05480f5df1..ebcaafbae3 100644
--- a/yt_dlp/extractor/_extractors.py
+++ b/yt_dlp/extractor/_extractors.py
@@ -2343,6 +2343,7 @@ from .vimm import (
 )
 from .viously import ViouslyIE
 from .viqeo import ViqeoIE
+from .visir import VisirIE
 from .viu import (
     ViuIE,
     ViuOTTIE,
diff --git a/yt_dlp/extractor/visir.py b/yt_dlp/extractor/visir.py
new file mode 100644
index 0000000000..0733a243a6
--- /dev/null
+++ b/yt_dlp/extractor/visir.py
@@ -0,0 +1,116 @@
+import re
+
+from .common import InfoExtractor
+from ..utils import (
+    UnsupportedError,
+    clean_html,
+    int_or_none,
+    js_to_json,
+    month_by_name,
+    url_or_none,
+    urljoin,
+)
+from ..utils.traversal import find_element, traverse_obj
+
+
+class VisirIE(InfoExtractor):
+    IE_DESC = 'Vísir'
+
+    _VALID_URL = r'https?://(?:www\.)?visir\.is/(?P<type>k|player)/(?P<id>[\da-f-]+)(?:/(?P<slug>[\w.-]+))?'
+    _EMBED_REGEX = [rf'<iframe[^>]+src=["\'](?P<url>{_VALID_URL})']
+    _TESTS = [{
+        'url': 'https://www.visir.is/k/eabb8f7f-ad87-46fb-9469-a0f1dc0fc4bc-1769022963988',
+        'info_dict': {
+            'id': 'eabb8f7f-ad87-46fb-9469-a0f1dc0fc4bc-1769022963988',
+            'ext': 'mp4',
+            'title': 'Sveppi og Siggi Þór mestu skaphundarnir',
+            'categories': ['island-i-dag'],
+            'description': 'md5:e06bd6a0cd8bdde328ad8cf00d3d4df6',
+            'duration': 792,
+            'thumbnail': r're:https?://www\.visir\.is/.+',
+            'upload_date': '20260121',
+            'view_count': int,
+        },
+    }, {
+        'url': 'https://www.visir.is/k/b0a88e02-eceb-4270-855c-8328b76b9d81-1763979306704/tonlistarborgin-reykjavik',
+        'info_dict': {
+            'id': 'b0a88e02-eceb-4270-855c-8328b76b9d81-1763979306704',
+            'ext': 'mp4',
+            'title': 'Tónlistarborgin Reykjavík',
+            'categories': ['tonlist'],
+            'description': 'md5:47237589dc95dbde55dfbb163396f88a',
+            'display_id': 'tonlistarborgin-reykjavik',
+            'duration': 81,
+            'thumbnail': r're:https?://www\.visir\.is/.+',
+            'upload_date': '20251124',
+            'view_count': int,
+        },
+    }, {
+        'url': 'https://www.visir.is/player/0cd5709e-6870-46d0-aaaf-0ae637de94f1-1770060083580',
+        'info_dict': {
+            'id': '0cd5709e-6870-46d0-aaaf-0ae637de94f1-1770060083580',
+            'ext': 'mp4',
+            'title': 'Sportpakkinn 2. febrúar 2026',
+            'categories': ['sportpakkinn'],
+            'display_id': 'sportpakkinn-2.-februar-2026',
+            'duration': 293,
+            'thumbnail': r're:https?://www\.visir\.is/.+',
+            'upload_date': '20260202',
+            'view_count': int,
+        },
+    }]
+    _WEBPAGE_TESTS = [{
+        'url': 'https://www.visir.is/g/20262837896d/segir-von-brigdin-med-prinsessuna-rista-djupt',
+        'info_dict': {
+            'id': '9ad5e58a-f26f-49f7-8b1d-68f0629485b7-1770059257365',
+            'ext': 'mp4',
+            'title': 'Norðmenn tala ekki um annað en prinsessuna',
+            'categories': ['frettir'],
+            'description': 'md5:53e2623ae79e1355778c14f5b557a0cd',
+            'display_id': 'nordmenn-tala-ekki-um-annad-en-prinsessuna',
+            'duration': 138,
+            'thumbnail': r're:https?://www\.visir\.is/.+',
+            'upload_date': '20260202',
+            'view_count': int,
+        },
+    }]
+
+    def _real_extract(self, url):
+        video_type, video_id, display_id = self._match_valid_url(url).group('type', 'id', 'slug')
+        webpage = self._download_webpage(url, video_id)
+        if video_type == 'player':
+            real_url = self._og_search_url(webpage)
+            if not self.suitable(real_url) or self._match_valid_url(real_url).group('type') == 'player':
+                raise UnsupportedError(real_url)
+            return self.url_result(real_url, self.ie_key())
+
+        upload_date = None
+        date_elements = traverse_obj(webpage, (
+            {find_element(cls='article-item__date')}, {clean_html}, filter, {str.split}))
+        if date_elements and len(date_elements) == 3:
+            day, month, year = date_elements
+            day = int_or_none(day.rstrip('.'))
+            month = month_by_name(month, 'is')
+            if day and month and re.fullmatch(r'[0-9]{4}', year):
+                upload_date = f'{year}{month:02d}{day:02d}'
+
+        player = self._search_json(
+            r'App\.Player\.Init\(', webpage, video_id, 'player', transform_source=js_to_json)
+        m3u8_url = traverse_obj(player, ('File', {urljoin('https://vod.visir.is/')}))
+
+        return {
+            'id': video_id,
+            'display_id': display_id,
+            'formats': self._extract_m3u8_formats(m3u8_url, video_id, 'mp4'),
+            'upload_date': upload_date,
+            **traverse_obj(webpage, ({find_element(cls='article-item press-ads')}, {
+                'description': ({find_element(cls='-large')}, {clean_html}, filter),
+                'view_count': ({find_element(cls='article-item__viewcount')}, {clean_html}, {int_or_none}),
+            })),
+            **traverse_obj(player, {
+                'title': ('Title', {clean_html}),
+                'categories': ('Categoryname', {clean_html}, filter, all, filter),
+                'duration': ('MediaDuration', {int_or_none}),
+                'thumbnail': ('Image', {url_or_none}),
+            }),
+        }
diff --git a/yt_dlp/utils/_utils.py b/yt_dlp/utils/_utils.py
index 695be84316..74bb6dcdb1 100644
--- a/yt_dlp/utils/_utils.py
+++ b/yt_dlp/utils/_utils.py
@@ -75,6 +75,9 @@ MONTH_NAMES = {
     'fr': [
         'janvier', 'février', 'mars', 'avril', 'mai', 'juin',
         'juillet', 'août', 'septembre', 'octobre', 'novembre', 'décembre'],
+    'is': [
+        'janúar', 'febrúar', 'mars', 'apríl', 'maí', 'júní',
+        'júlí', 'ágúst', 'september', 'október', 'nóvember', 'desember'],
     # these follow the genitive grammatical case (dopełniacz)
     # some websites might be using nominative, which will require another month list
     # https://en.wikibooks.org/wiki/Polish/Noun_cases