Başak Eraydın (born 21 June 1994) is a Turkish professional tennis player.

Playing with İpek Öz, Eraydın won the Gold medal in women's doubles at the 2018 Mediterranean Games.

Playing for the Turkey Fed Cup team, Eraydın has an overall win–loss record of 5–7 (singles 3–4) as of August 2024.

[citation needed] In April 2017, she won the inaugural 2017 Lale Cup in Istanbul, a $60k event, by defeating Petra Krejsová in straight sets in the final.

[2] Partnering İpek Öz, Eraydın won the Gold medal in the women's doubles at the 2018 Mediterranean Games, defeating Bosnian pair Nefisa Berberović and Dea Herdželaš in the final which went to a deciding champions tiebreak.