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 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.