Maria Sara Popa (born 29 July 2005)[1] is a Romanian tennis player.

Popa, who began playing at the age of 4, has a career-high singles ranking by the Women's Tennis Association (WTA) of 395.

[5] She is one of only six women who played three ITF singles finals[6][7][8] in 2023, at such a young age,[9] winning one of them and is among the world's youngest 20 players in WTA's Top 600.

[10] Of all the players from her country, Popa holds the record of being the youngest Romanian with an ITF Women's singles final in the last six years[11] and the only one to have reached No.

She was awarded a wild card in the qualifying draw of the 2023 Țiriac Foundation Trophy, based on her results from the local ITFs.