| Country: | England |
| Fullname: | Derek John Seth-Smith |
| Birth Date: | 11 August 1920 |
| Birth Place: | Church Crookham, Hampshire, England |
| Death Place: | Chelsea, London, England |
| Batting: | Right-handed |
| Bowling: | Right-arm fast-medium |
| Columns: | 1 |
| Column1: | First-class |
| Matches1: | 1 |
| Runs1: | 3 |
| Bat Avg1: | 1.50 |
| 100S/50S1: | –/– |
| Top Score1: | 3 |
| Deliveries1: | 36 |
| Wickets1: | 0 |
| Bowl Avg1: | – |
| Fivefor1: | – |
| Tenfor1: | – |
| Best Bowling1: | – |
| Catches/Stumpings1: | -/- |
| Date: | 25 December |
| Year: | 2018 |
| Source: | http://www.espncricinfo.com/england/content/player/20663.html Cricinfo |
Derek John Seth-Smith (11 August 1920 - 24 June 1964) was an English first-class cricketer.
Born at Church Crookham, Seth-Smith was the son of the Berkshire minor counties cricketer Keith Seth-Smith.[1] He served during World War II in the Royal Hampshire Regiment as a second lieutenant. He married Jean Halcro Erskine-Hill, the daughter of Alexander Erskine-Hill, on 16 September 1950.[1] In that same year he appeared in a first-class cricket match for the Free Foresters against Oxford University at Oxford.[2] He bowled six wicketless overs with his right-arm fast-medium bowling in Oxford's first-innings, while with the bat he was dismissed without scoring by Anthony Jessup in the Free Foresters first-innings, while in their second-innings he was dismissed by the same bowler for 3 runs.[3] He died at Chelsea in June 1964.[1]