Rēzija Kalniņa (born 23 December 1970) is a Latvian actress. In the theater, since 1994, she has worked for Dailes teātris. She has also taken part in several films.
Her father is famous Latvian composer Imants Kalniņš.

In 2001, she received Lielais Kristaps for her role in Labās rokas.