Nadezhda Mitrofanovna Slavinskaya-Belonenko (Russian: Надежда Митрофановна Славинская-Белоненко (born Nadezhda Belonenko), (22 November 1911 – 1964) was a Soviet tennis player, four-time Soviet Union Champion.

She also reached the finals of USSR Championships twelve times: 1940, 1944–1946, 1951 (singles) and 1944–1945, 1947, 1949–1952 (doubles).

Champion of the All-Union Central Council of Professional Unions (ВЦСПС) in 1939, 1944–1945 in women singles, and in 1945 in doubles.

Winner of the Moscow Cup in 1947, playing for Spartak (sports society).

Belonenko coached at the Soviet Wings (ДСО "Крылья Советов") sports society from 1942 to 1946.