Kenji Ninuma (新沼謙治, Niinuma Kenji, born on February 27, 1956 in Ofunato, Iwate Prefecture, Japan) is Japanese enka singer, actor and TV celebrity. Ninuma participated to the Japanese talent show スター誕生！ (Star Tanjou!) in 1975, before signing to record label Nippon Columbia (Columbia Music Entertainment from 2002 to 2010) and debuting his career as an enka singer in 1976.
Besides his enka career, Ninuma appeared in numerous TV variety shows and dramas.

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