| Class: | Group 3 |
| Horse Race: | Somerville Tattersall Stakes (Tattersalls Stakes) |
| Location: | Rowley Mile Newmarket, England |
| Race Type: | Flat / Thoroughbred |
| Website: | Newmarket |
| Distance: | 7f (1,408 metres) |
| Surface: | Turf |
| Track: | Straight |
| Qualification: | Two-year-old colts and geldings |
| Weight: | 9 st 0 lb Penalties 5 lb for G1 / G2 winners 3 lb for G3 winners |
| Purse: | £60,000 (2021) 1st: £34,026 |
|}The Somerville Tattersall Stakes, currently run as the Tattersalls Stakes, is a Group 3 flat horse race in Great Britain open to two-year-old colts and geldings. It is run on the Rowley Mile at Newmarket over a distance of 7 furlongs (1,408 metres), and it is scheduled to take place each year in late September.
The event is named after Edmund Somerville Tattersall (1863–1942), a senior partner of Tattersalls bloodstock auctioneers.
The race was formerly classed at Listed level, and it used to be open to horses of either gender. It was promoted to Group 3 status in 2000.
The Somerville Tattersall Stakes is currently held on the opening day of Newmarket's three-day Cambridgeshire Meeting. It is run two days before the Cambridgeshire Handicap.
The leading contenders sometimes go on to compete in the Dewhurst Stakes or the Racing Post Trophy.
Leading jockey since 1962 (6 wins):
Leading trainer since 1962 (5 wins):
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