Carel Pieter Cronje de Wet (25 May 1924 – 22 May 2004[citation needed]) was a South African politician, medical doctor, diplomat, and member of the National Party.

He was the grandson of Boer general Christiaan Rudolf de Wet, born 2 years after his death.

[1] De Wet matriculated from Vrede High School.

[3] De Wet was elected mayor of Vanderbijlpark in 1950 and became MP for that town from 1953 until 1964,[4] in that same year, he succeeded Hilgard Muller as South African Ambassador in London,[5] at 39, he was the youngest South African ambassador, later he would become MP for West Johannesburg in 1967.

[6] In 1972, he was reappointed South African Ambassador in London, a position he held until 1977.