Thomas Thiis-Evensen (born 17 May 1946) is a Norwegian architect.
He was born in Porsgrunn to physician Eyvind Thiis-Evensen and Ingeborg Johanna Rosenvold.
He graduated from the Oslo School of Architecture and Design in 1972.
He was appointed professor at the Lund University from 1989, and at the Oslo School of Architecture and Design from 1992.