Maria Yaina

Mariya Nikolayevna Yayna (Мария Николаевна Яйна; born 25 January 1982) is a Russian female water polo player. She was a member of the Russia women's national water polo team, playing as a driver.

She was a part of the team at the 2004 Summer Olympics. On club level she played for SKIF-CSP Izmailovo in Russia.