Dinara Mikhailovna Safina (Tatar: Динара Мөбин кызы Сафина, Dinara Möbin qızı Safina; Russian: Дина́ра Миха́йловна (Муби́новна) Са́фина, born April 27, 1986 in Moscow) is a Russian professional tennis player and is a former world number 1 women's tennis player, and currently Safina is ranked world number 2.

She has been the runner-up in three Grand Slam singles tournaments and won the women's doubles title at the 2007 US Open with Nathalie Dechy. She also won the Olympic silver medal in women's singles at the 2008 Summer Olympics in Beijing. Her most recent achievement is runner-up in the 2009 French Open.

She is the younger sister of former World No. 1 men's player Marat Safin. She and her brother are the first brother-sister tandem in tennis history to both achieve #1 rankings.