Niki Ninaus

Niki Ninaus (born 22 February 1974) is an Australian former professional tennis player of Austrian descent.

Ninaus, who grew up in Sydney, is the daughter of Austrian-born football player Herbert Ninaus. Her father was a member of the Austrian squad for the 1958 FIFA World Cup and played for Australia's "B" team after emigrating.

Active on the professional tour in the 1990s, Ninaus made a WTA Tour singles main draw appearance as a wildcard at the 1996 Meta Styrian Open, held in Austria. She had best career rankings of 741 in singles and 490 in doubles.