Ágnes Valkai (born 27 February 1981) is a Hungarian water polo player.

She was a member of the Hungary women's national water polo team, playing as a driver.

She was a part of the Hungary team that claimed the gold medal at the 2005 FINA World Championship in Montreal, Quebec, Canada.

[4] She is the younger sister of water polo player Erzsébet Valkai.

This biographical article relating to a Hungarian water polo figure is a stub.