Percy Laurence Tetzlaff (14 July 1920 – 30 August 2009) was a New Zealand rugby union player.
A halfback, Tetzlaff represented Waikato and Auckland at a provincial level, and was a member of the New Zealand national side, the All Blacks, on their 1947 tour of Australia.
He played seven matches for the All Blacks on that tour, including two internationals.
He was selected as one of the 5 players of the year for the 1945 season in the Rugby Almananac of New Zealand.
This biographical article relating to New Zealand rugby union, about a person born in the 1920s, is a stub.