Martin Damm Jr. (born September 30, 2003) is an American professional tennis player.

In August 2019, Damm and his partner Toby Kodat won the USTA Boys 18s National Championships doubles title, earning the pair a wildcard entry into the doubles main draw of the 2019 US Open.

[2][3] Damm age 15 and fellow American Toby Kodat age 16 became the youngest men's doubles team to win a US Open match in the Open Era.

[6] In March, he was also awarded a main draw wildcard at the 2024 Miami Open for his Masters debut where he recorded his first ATP Tour and Masters level win over Zhizhen Zhang[7][8] and 14th seed and compatriot Tommy Paul by retirement.

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