Nathaniel Theodore (Nathan) Nemetz, CC OBC QC (September 8, 1913 – October 21, 1997) was a Canadian lawyer and judge.

Born in Winnipeg, Manitoba, he moved with his family to Vancouver when he was 10.

In 1951, along with Senator John W. de B. Farris, KC, Nemetz was the successful counsel in an appeal to the Judicial Committee of the Privy Council: White v Kuzych, a significant labour law case.

Farris and Nemetz acted for White, the leader of the Boilermakers and Iron Shipbuilders Union, in a dispute with a union member, Myron Kuzych.

In 1973, he became Chief Justice of the Supreme Court of British Columbia and was appointed Chief Justice of British Columbia in 1979.