Pienaar is a surname of Huguenot origin (originally Pinard from western and central France, meaning "small coin change" and "sort of wine", now Argot French "wine") that is particularly common in South Africa. It may refer to:
- Andries Albertus Pienaar, (known as A. A. Pienaar, pen name Sangiro), South African author, film director and game warden.
- Dan Pienaar (1893–1942), South African soldier
- Francois Pienaar (born 1967), South African rugby player
- Gerhardus Pienaar (born 1981), South African javelin thrower
- Gysie Pienaar, Springbok fullback, father of Ruan Pienaar
- John Pienaar, British journalist
- Michael Pienaar (born 1982) Namibian football player
- Peet Pienaar (born 1971), South African artist
- Ruan Pienaar (born 1984), South African rugby player
- Steven Pienaar (born 1982), South African football player
- Ross Pienaar, fictional character in the movie "District 9"
| This page or section lists people with the surname Pienaar. If an internal link intending to refer to a specific person led you to this page, you may wish to change that link by adding the person's given name(s) to the link. |