Lembit Ulfsak (4 July 1947 – 22 March 2017) was an Estonian stage and movie actor.
Ulfsak starred in the 2014 movie Tangerines. He was nominated for the Best Foreign Language Film at the 87th Academy Awards. It was also among the five nominated movie at the 72nd Golden Globe Awards for best foreign language movie.
Ulfsak died on 22 March 2017 in Tallinn at the age of 69.