| Tiger Devenish | |
| Birth Name: | Mynardus Jeremias Devenish |
| Birth Date: | 27 May 1867 |
| Birth Place: | Victoria West, Cape Colony |
| Death Place: | Croydon, England |
| Ru Position: | Forward |
| Repteam1: | South Africa |
| Repyears1: | 1891 |
| Repcaps1: | 1 |
| Reppoints1: | 0 |
| Ru Ntupdate: | 19 July 2010 |
| Ru Province1: | Transvaal |
| Ru Provinceupdate: | 19 July 2010 |
| Relatives: | Charlie Devenish (brother) |
Mynardus Jeremias "Tiger" Devenish (27 May 1867 – 10 September 1928) was a South African international rugby union player.
Born in Victoria West, he attended SACS before playing provincial rugby for Transvaal (now known as the Golden Lions).[1] In July 1891 he was selected to represent South Africa, as a forward, in their first ever Test—against Great Britain at the Crusader's Ground, Port Elizabeth. The match, which was won by Great Britain, was his only appearance for South Africa. Devenish died in 1928 at the age of 61.[2]