Eva Lys (born 12 January 2002) is a German professional tennis player. Lys reached a career-high WTA ranking of world No. 112 in singles on 17 April 2023. She has won three singles titles at tournaments of the ITF Women's Circuit.
As a junior she participated in the Australian Open, winning in the qualifiers but losing in the first round.
Lys made her WTA Tour main-draw debut at the Hamburg European Open when she received a wildcard into the doubles draw, partnering Noma Noha Akugue. They lost to Mona Barthel and Mandy Minella in the first round.
Lys made her WTA singles debut at the Porsche Tennis Grand Prix in Stuttgart, coming through the qualifying. She beat Viktorija Golubic in the first round, before losing to world No. 1, Iga Świątek, in the second.
Lys made her Grand Slam debut at the Australian Open. She reached her best career ranking of world No. 112 on 17 April 2023.
She made her main draw debut at a WTA 1000 level at the China Open after entering the qualifying competition as an alternate. She reached the semifinals of the Transylvania Open but lost to eventual champion, compatriot Tamara Korpatsch.