İlkay Dikmen (born February 2, 1981, in Izmir, Turkey) is a Turkish swimmer competing in the breaststroke events.

The 166 cm (5 ft 5 in) tall sportswoman at 60 kg (130 lb) is a member of Fenerbahçe Swimming in Istanbul.

[2] In 1992, she became the Turkish champion in her age group in the 100 m and 200 m breaststroke, the 100 m backstroke, the 100 m freestyle and the 200 m individual medley events.

[2] After completing the high school in Turkey, she went to Champaign, Illinois, United States for university education.

[2] At the European Short Course Swimming Championships 2005 held in Trieste, Italy, she set a national record in 200 m breaststroke with 2:27.98.