Tõnu Saar (August 6, 1944 – July 12, 2022) was an Estonian actor.
In 1972, he graduated from the Tallinn State Conservatory's Performing Arts Department. From 1963 until 1968, he worked as a photographer. From 1972 until 1980, he worked at Estonian Youth Theatre, and from 1980 until 1998, at Estonian Drama Theatre. Besides theatre roles he appeared in a number of films and on television.