Twyn-yr-Odyn

{{Use dmy dates|date=October 2019}}

{{Infobox UK place

| country = Wales

| welsh_name =

| official_name = Twyn-yr-Odyn

| coordinates = {{coord|51.456667|-3.273889|display=inline,title}}

| static_image = Horse and Jockey Inn, Twyn-Yr-Odyn, Cardiff. - geograph.org.uk - 372936.jpg

| static_image_width = 250px

| static_image_caption = The Horse and Jockey Inn

| unitary_wales = Vale of Glamorgan

| lieutenancy_wales = South Glamorgan

| constituency_welsh_assembly = Vale of Glamorgan

| constituency_westminster = Vale of Glamorgan

| post_town = CARDIFF

| postcode_district = CF5

| postcode_area = CF

| dial_code =

| os_grid_reference =

| london_distance =

| cardiff_distance =

| population =

}}

Twyn-yr-Odyn ({{langx|cy|Twynyrodyn}}) is a hamlet in the Vale of Glamorgan, southeast Wales, just beyond the territorial border of western Cardiff. It lies just southwest of Culverhouse Cross, very close to Wenvoe and St Lythans.{{cite book|last1=Moody|first1=Ian|last2=Jones|first2=S.|title=Wenvoe and Twyn-Yr-Odyn|url=https://books.google.com/books?id=6UsoAQAACAAJ|accessdate=28 June 2011|date=1 May 2003|publisher=Tempus|isbn=978-0-7524-2934-2}} The Wenvoe Transmitter is located there. It is home to a pub named the Horse and Jockey Inn.

There is an allotment in the vicinity.