Heidi Bertha Auguste Kabel (27 August 1914 – 15 June 2010) was a German musician and actress. Most of her stage roles were performed at the Ohnsorg-Theater in Hamburg, many of them in Low German.

Heidi Kabel was born in Hamburg. She was married to stage director and actor Hans Mahler, who died in 1970. Their daughter, Heidi Mahler, is also an actress.