Michael Roy Sinker (called Roy; 28 September 19088 March 1994) was Archdeacon of Stow from 1963 to 1967.
Sinker was educated at Haileybury, Clare College, Cambridge and Ripon College Cuddesdon. He was ordained in 1933. After a curacy in Dalston he was Chaplain to the South African Church Railway Mission from 1935 to 1938. He then served at Bishop's Hatfield, Dalton-in-Furness, and Saffron Walden before his time as Archdeacon; and at St Matthew, Ipswich afterwards.