Raine Loo (March 28, 1945 – May 16, 2020) was an Estonian actress.

Raine Loo was born in the former Taevere Parish in Viljandi County, which is now part of Põhja-Sakala Parish. She attended No. 8 School in Tartu (now, the Tartu Forselius School), graduating in 1963. Afterward, she studied acting at the Vanemuine teaching studio, where she graduated from in 1965.