Siyamthanda 'Siya' Kolisi (born 16 June 1991) is a South African rugby union footballer who plays for Western Province in the Currie Cup and the Stormers in Super Rugby. He has the ability to play in any position in the back-row but has thus far mostly featured as a flank.
Kolisi grew up in the impoverished Zwide township outside Port Elizabeth and endured a tough upbringing. At the age of 12 he impressed scouts at a youth tournament in Mossel Bay and was offered a scholorship at Grey Junior in PE. He subsequently moved up to Grey High School, where he was a member of the first XV rugby team. He was also a part of the Eastern Province Kings youth set-up between 2007 and 2009, playing in the Under-16 Grant Khomo week and the Under-18 Craven Week before shifting west to join Western Province.