| Threlfall Baines | |
| Birth Date: | 20 June 1908 |
| Birth Place: | Johannesburg, South Africa |
| Death Place: | Western Cape, South Africa |
| Nationality: | South African |
| Occupation: | First-class cricketer |
| Years Active: | 1925–1937 |
| Relatives: | Michael Baines (cousin) |
Threlfall Werge Talbot Baines (20 June 1908 – 8 May 1994) was a South African first-class cricketer active from 1925 to 1937 who played for Cambridge University, Eastern Province and Transvaal.[1] He was born in Johannesburg and died in Western Cape. He appeared in 20 first-class matches.[2] His cousin, Michael Baines, was also a first-class cricketer.