Mari Tanaka (田中 麻里, Tanaka Mari, born January 11, 1987) is a Japanese former professional tennis player.

In her career, she won four singles titles and 18 doubles titles on the ITF Women's Circuit.

In August 2013, she achieved a career-high singles ranking of world No.

On 12 May 2014, she peaked at No.

189 in the doubles rankings by the Women's Tennis Association (WTA).