John Longmire has been the senior coach of the Sydney Swans since 2011. Longmire led the football club to the 2012 Premiership and two further Grand Final appearances in 2014 and 2016.

The Sydney Swans have missed just two finals series under the guidance of Longmire since he took over. 

In 2021 Longmire will be joined by Dean Cox, Ben Mathews, Jarrad McVeigh and Don Pyke in the coaches box. Jeremy Laidler will coach the reserves side in 2021.