| Class: | Listed |
| Horse Race: | Oyster Stakes |
| Location: | Ballybrit Racecourse County Galway, Ireland |
| Race Type: | Flat / Thoroughbred |
| Sponsor: | Ardilaun Hotel |
| Website: | Galway Races |
| Distance: | 1m 4f 42y (2,452 metres) |
| Surface: | Turf |
| Track: | Right-handed |
| Qualification: | Three-years-old and up fillies and mares Excluding Group race winners |
| Weight: | 9 st 0 lb (3yo); 9 st 7 lb (4yo+) Penalties 5 lb for two Listed wins * 3 lb for one Listed win * * since 1 January 1 |
| Purse: | €37,600 (2022) 1st: €23,600 |
|}The Oyster Stakes is a Listed flat horse race in Ireland open to thoroughbred fillies and mares aged three years or older. It is run at Galway over a distance of 1 mile 4 furlongs and 42 yards (2,452 metres), and it is scheduled to take place each year in September.
The race was first run in 1991.
Leading jockey (4 wins):
Leading trainer (10 wins):
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| Year | Winner | Age | Jockey | Trainer | Time | |
|---|---|---|---|---|---|---|
| 1991 | Judicial | 4 | Kevin Manning | Michael Grassick | 2:25.60 | |
| 1992 | Ebaziya | 3 | Richard Hughes | John Oxx | 2:37.10 | |
| 1993 | Alouette | 3 | Christy Roche | Jim Bolger | 2:41.30 | |
| 1994 | Ballykett Nancy | 3 | Kevin Manning | Jim Bolger | 2:40.00 | |
| 1995 | Russian Snows | 3 | Michael Kinane | John Oxx | 2:35.60 | |
| 1996 | Predappio | 3 | Johnny Murtagh | John Oxx | 2:39.10 | |
| 1997 | Aliya | 3 | Pat Smullen | John Oxx | 2:42.30 | |
| 1998 | Yavana's Pace | 6 | Darryll Holland | Mark Johnston | 2:57.40 | |
| 1999 | Theatreworld | 7 | Michael Kinane | Aidan O'Brien | 2:47.90 | |
| 2000 | Dolydille | 4 | Kevin Manning | Jim Bolger | 2:38.40 | |
| 2001 | Mutakarrim | 4 | Pat Smullen | Dermot Weld | 2:34.30 | |
| 2002 | Bowmore | 3 | Johnny Murtagh | John Oxx | 2:50.10 | |
| 2003 | Chartres | 4 | Johnny Murtagh | John Oxx | 2:36.70 | |
| 2004 | Royal Devotion | 4 | Tadgh O'Shea | Michael Halford | 2:39.20 | |
| 2005 | Blue Corrig | 5 | Seamie Heffernan | Joe Crowley | 2:36.90 | |
| 2006 | Rockall Blizzard | 3 | Niall Madden | Noel Meade | 2:36.10 | |
| 2007 | Hasanka | 3 | Michael Kinane | John Oxx | 2:36.40 | |
| 2008 | Honoria | 3 | Seamie Heffernan | Aidan O'Brien | 2:47.72 | |
| 2009 | Aliyfa | 3 | Michael Kinane | John Oxx | 3:03.82 | |
| 2010 | Rajik | 5 | Declan McDonogh | Charlie Swan | 2:44.48 | |
| 2011 | Zanughan | 3 | Johnny Murtagh | John Oxx | 2:34.66 | |
| 2012 | Chamonix | 3 | Joseph O'Brien | Aidan O'Brien | 2:56.67 | |
| 2013 | Missunited | 6 | Seamie Heffernan | Michael Winters | 2:39.32 | |
| 2014 | Tarana | 4 | Declan McDonogh | John Oxx | 2:37.19 | |
| 2015 | Zhukova | 3 | Leigh Roche | Dermot Weld | 2:41.94 | |
| 2016 | Almela | 4 | Pat Smullen | Dermot Weld | 2:43.47 | |
| 2017 | Airlie Beach | 7 | Pat Smullen | Willie Mullins | 2:45.97 | |
| 2018 | Baby Pink | 3 | Niall McCullagh | Joseph O'Brien | 2:50.91 | |
| 2019 | Diamond Hill | 6 | Colin Keane | Willie Mullins | 2:46.74 | |
| 2020 | Princess Zoe | 5 | Joey Sheridan | Anthony Mullins | 2:53.66 | |
| 2021 | Haparanda | 4 | Colin Keane | Dermot Weld | 2:41.92 | |
| 2022 | Yaxeni | 5 | Colin Keane | Ger Lyons | 2:45.24 | |
| 2023 | Thunder Roll | 3 | Dylan Browne McMonagle | Joseph O'Brien | 2:43.44 |