Mads Clausen (21 October 1905 – 27 August 1966) born in Elsmark, parish of Havnbjerg, municipality of Nordborg in Denmark, was a Danish industrialist and founder of Danfoss in 1933.
He died in transit from Elsmark to Sønderborg.
He married Dorthea (Bitten) Emma Clausen (1912–2016) in 1939.
The couple had five children:
Karin Clausen (b.
1940)
Bente Clausen (b.
1942)
Jørgen Mads Clausen (b.
1948), chairman of Danfoss's board of directors
Peter Johan Mads Clausen (b.