Sir Michael Cameron St John Birt, KC (born 25 August 1948) was the 88th Bailiff of Jersey in the Channel Islands.

Birt was educated in Jersey at St. Michael's Preparatory School then at Marlborough College.

Birt was called to the English Bar in 1970 and practised in London as a barrister at 2 Crown Office Row for five years.

[3] From 1976 to 1993 he was in private practice with the Jersey law firm Ogier & Le Cornu.

Birt served as a Crown advocate 1987–93 and HM Attorney General for Jersey 1994–2000.