Jason Weir-Smith (born 8 August 1975) is a former professional tennis player from South Africa.^[1]

Weir-Smith won the doubles title at the Coffee Bowl junior tournament in 1993, with Juan Antonio Marín as his partner.^[2]

A doubles specialist, Weir-Smith played collegiate tennis at Texas Christian University and was a doubles All-American while playing with the Horned Frogs in 1996 and 1997.^[3]

The South African competed in the men's doubles at six Grand Slam tournaments during his career, including all four in 2001.^[4] He made the second round at the 2001 French Open (with Neville Godwin) and 2001 US Open (with Aleksandar Kitinov).^[4]

He never reached a final on the ATP Tour but was a doubles semi-finalist on four occasions, at Umag in 2000, the 2000 Brighton International, the 2001 Heineken Open in Auckland and Munich's BMW Open in 2001.^[4] His partner in Umag, Brighton and Auckland was Paul Rosner and he partnered John-Laffnie de Jager in Munich.^[4]

No.	Year	Tournament	Surface	Partner	Opponents	Score
1.	1999	Eisenach, Germany	Clay	Mitch Sprengelmeyer	Dirk Dier Marcus Hilpert	6–3, 6–1
2.	1999	Binghamton, United States	Hard	Mitch Sprengelmeyer	Kevin Kim Hyung-Taik Lee	5–7, 6–4, 6–2
3.	1999	San Antonio, United States	Hard	Mitch Sprengelmeyer	Andrew Painter Byron Talbot	6–3, 7–6(8–6)
4.	2000	Segovia, Spain	Hard	Ashley Fisher	Jordan Kerr Damien Roberts	7–6(7–5), 6–1
5.	2001	Wroclaw, Poland	Hard	Wayne Black	Julian Knowle Michael Kohlmann	6–3, 6–4