John McQuillan (30 August 1920 – 8 March 1998) was an Irish politician, trade unionist and army officer.

He began a career as an officer in the Irish Army though resigned to work as a local government official.

[4] After fellow Clann na Poblachta TD, Noël Browne resigned as Minister for Health, McQuillan resigned from Clann na Poblachta in support of Browne and sat as an Independent TD.

This new arrangement did not prove electorally beneficial to McQuillan as he lost his seat in Roscommon at the 1965 general election.

He resigned the Labour Party whip in 1967 and did not seek re-election at the 1969 general election, and retired from his Roscommon County Council seat in 1974.