Knud Leif Thomsen (2 September 1924 – 14 October 2003) was a Danish film director and screenwriter.
His film Duellen was entered into the 12th Berlin International Film Festival.
Two years later, his film School for Suicide was entered into the 14th Berlin International Film Festival.
[2] His 1973 film Lina's Wedding was entered into the 8th Moscow International Film Festival.
[3] In 1967 he was a member of the jury at the 17th Berlin International Film Festival.