Lasse Torkelson Trædal (20 December 1857 – 14 October 1924) was a Norwegian farmer, schoolteacher and politician for the Liberal Party.
He was born in Lavik and was a member of Lavik municipal council from 1895 to 1913, serving as mayor.
He was elected to the Parliament of Norway from Nordre Bergenhus Amt in 1900, and after a hiatus he won re-elections in 1909, 1912 and 1915.