The Swansea City duo were recognised for their excellent performances in the Swans promotion push by their peers.
Williams has been strong at the back and is widely recognised as one of the best central defenders outside of the Premier League while Sinclair has been a revelation this season with 22 goals to his credit since his summer signing from Chelsea.
The full PFA team read
Championship team: Paddy Kenny (QPR), Kyle Naughton (Leicester – on loan from Spurs), Ian Harte (Reading), Ashley Williams (Swansea), Wes Morgan (Nottingham Forest), Adel Taarabt (QPR), Scott Sinclair (Swansea), Andy King (Leicester), Wes Hoolahan (Norwich), Danny Graham (Watford), Grant Holt (Norwich).