Desmond John Lock (born 2 October 1949) is a New Zealand rower.

Lock was born in 1949 in Batu Gajah, Malaysia.

[3][4] He represented New Zealand at the 1976 Summer Olympics in the coxless four in a team with Bob Murphy, Grant McAuley, and David Lindstrom, narrowly beaten by the team from the Soviet Union to fourth place.

[2] The 1977 World Rowing Championships saw Lock win silver in the coxless four with Ivan Sutherland, David Lindstrom and Dave Rodger under new coach Harry Mahon.

This biographical article relating to New Zealand rowing is a stub.