Frigga Haug (née Langenberger) (born November 28, 1937) is a German socialist-feminist sociologist and philosopher.

In 1963, she interrupted her studies to move to Cologne and give birth to a daughter.

In 1965 she married a second time to the philosopher Wolfgang Fritz Haug.

[1] Haug's magazine Das Argument grew out of her opposition to nuclear rearmament.

She joined the Socialist German Student Union (SDS) in protest at the Vietnam War, and also developed a feminist perspective.