Karl Gustav Ahlefeldt (March 13, 1910 - March 25, 1985) was a Danish film actor. He appeared in the Carl Theodor Dreyer masterpiece Gertrud (1965).
Filomgraphy
- De bor forelske dem (1935),
- Familien Olsen (1940),
- Sommerglaeder (1940),
- Soren Sondervold (1942),
- Tante Cramers testamente (1942),
- Hans onsdags veninde (1943),
- Teatertosset (1944),
- Elly Petersen (1944),
- Hans store aften (1946),
- Nar katten er ude (1947),
- Tre ar efter (1948),
- I gabestokken (1950),
- Nalen (1951),
- Tag til marked i Fjordby (1957),
- Mariannes bryllup (1958),
- Det lille hotel (1958),
- Gongehovdingen (1961),
- Gertrud (1965),
- Hurra for de bla husarer (1970),
- Bejleren - en Jysk roverhistorie (1975),
- Familien Gyldenkal (1975).