Diāna Marcinkēviča, Latvian tennis player

Diāna Marcinkēviča (born 3 August 1992) is a tennis player from Latvia.

Marcinkēviča has won seven singles and 27 doubles titles on the ITF Circuit. On 28 April 2014, she reached her best singles ranking of world No. 196. On 26 May 2014, she peaked at No. 146 in the WTA doubles rankings.

Marcinkēviča recorded her first win on the WTA Tour at the 2019 Baltic Open where she beat Kamilla Rakhimova in straight sets.

Playing for the Latvia Fed Cup team, she has a win/loss record of 23–25.