Michael or Mike Sinclair may refer to:
Michael Sinclair (British Army officer) (1918–1944), British World War II officer, notable for being held captive in Colditz Castle Michael Sinclair (American football) (born 1968), retired American football player Michael Sinclair, pseudonym of Scottish diplomat and thriller writer Michael Shea Mike Sinclair (footballer) (1938–2017), English footballer (Grimsby Town)