Hilmi Ok (18 January 1932 â 15 February 2020) was a Turkish football referee.
Ok was assigned to referee in the Süper Lig in 1974, before becoming a FIFA referee in 1976.
In 1980, Ok was assigned to referee at UEFA Euro 1980, where he officiated a group stage match between the Netherlands and Czechoslovakia.
Ok retired from officiating in 1981.
Ok died on 15 February 2020 at the age of 88.