Karl Hauenschild (30 August 1920 – 28 February 2006) was a German trade union leader and politician.
He refused to join the Hitler Youth, and so was barred from his planned career in financial administration, instead becoming a clerk at a chemical company.
He also joined the Social Democratic Party and a local forerunner of the Chemical, Paper and Ceramic Union (IG Chemie).
A strong supporter of social partnership, he was criticised for conducting secretive negotiations with employers, and leading a top-down style of organisation.
In 1970, he was additionally elected as president of the International Federation of Chemical, Energy and General Workers' Unions.