İlkay is a common unisex Turkish given name. "İlkay" is composed of two words: "İlk" and "Ay". In Turkish, "İlk" means "first", and/or "prime", whereas "ay" means "moon". Thus, İlkay means "First moon".

• İlkay Dikmen (born 1981), Turkish female Olympian swimmer
• İlkay Durmuş (born 1994), Turkish male footballer
• İlkay Gündoğan (born 1990), German male footballer of Turkish descent
• İlkay Özdemir (born 1981), Turkish female performer of stage magic
• Ilkay Silk (born 1948), Cypriot-born British and Canadian theatre artist