Leonhard Merzin (Russian: Леонха́рд Ри́хардович Ме́рзин); 10 February 1934 in Aruküla, Kudina Parish (now Maardla, Mustvee Parish) – 2 January 1990 in Tartu[1]) was an Estonian theatre and film actor, one of the Estonian actors active in the Soviet Union and abroad.

[1] His most notable role in Estonia is "Teacher Laur" in Spring (Kevade) and as Edgar in Soviet Union adaption of King Lear (Korol Lir).

[1] From 1952 to 1954 Merzin studied at the Tartu Art School and in 1969 he graduated from the Viljandi School of Cultural Education.

Merzin also tried hand as a painter, mostly depicting nature and flowers.

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