Cristina Dinu (born 18 January 1993) is a professional Romanian tennis player. On 30 September 2013, she reached her best singles ranking of world No. 179. On 20 May 2019, she peaked at No. 153 in the doubles rankings.
Dinu has won 25 singles and 32 doubles titles on the ITF Women's Circuit.
She was ranked world's 11th female junior player in May 2010 and was part of the main singles and doubles draws for the last five Grand Slam tournaments: 2009 US Open, 2010 Australian Open, 2010 French Open, 2010 Wimbledon Championships, 2010 US Open and competed at the 2010 Summer Youth Olympics also.
In July 2015, Dinu entered the Bucharest Open, and won the three consecutive qualifying rounds matches (defeating top seed Yaroslava Shvedova in the last round), eventually losing in the main draw to Denisa Allertova, in a thrilling match.
In 2022, Cristina Dinu joined the Sportsin Arad Club.