Pieter ("Piet") Aldrich (born 7 September 1965) is a former professional tennis player from South Africa.

Aldrich won the first of nine career doubles titles in 1988 at Charleston, South Carolina.

[2] In 1990, Aldrich won the men's doubles titles at both the Australian Open and the US Open, partnering his fellow South African player Danie Visser.

[3] 1990 also saw Aldrich win his first (and only) top-level singles title at Newport, Rhode Island.

[6] Aldrich won the final doubles title of his career in 1992 in Johannesburg.