Valerie Koortzen (born 15 February 1937) is a South African former professional tennis player.

[1] Koortzen, active on tour in the 1950s and 1960s, twice made it to the singles third round of the Wimbledon Championships.

She was a women's doubles quarter-finalist at both Wimbledon and the French Championships.

Her career singles titles included Düsseldorf in 1957, beating Pat Ward in the final.

[3] This biographical article relating to South African tennis is a stub.