Lyle Stuart Kristiansen (May 9, 1939 – June 18, 2015) was a Canadian New Democratic Party member of the House of Commons. He was an executive secretary, financial secretary and woodworker by career.^[1]

His first two attempts at a House of Commons seat from British Columbia were unsuccessful. He first campaigned federally in the 1965 federal election at Vancouver Centre electoral district. He would not run again until the 1979 federal election at Kootenay West.

Kirstiansen was successful in his third federal attempt in 1980 election at Kootenay West. He lost this seat in the 1984 general election, but returned to Ottawa after the 1988 federal election at the Kootenay West--Revelstoke riding. Kristiansen did not contest another federal election and left federal politics in 1993. He served in the 32nd and 34th Canadian Parliaments.^{[citation needed]}

In his later years, Lyle became the BCFORUM Representative on the Sunshine Coast Labour Council, where he was considered both an asset, and a friend by all who served on the council with him.^{[citation needed]}

Kristiansen died on June 18, 2015, at the age of 76.^[1]