Abay is both a surname and a given name. Notable people with the name include:
Surname Aydo Abay (born 1973), German singer and songwriter of Turkish descent Burak Abay (born 1996), Turkish cyclist Dong Abay (born 1971), Filipino musician Korhan Abay (born 1954), Turkish actor Oszkár Abay-Nemes (1913–1959), Hungarian swimmer Péter Abay (born 1962), Hungarian fencer Yordanos Abay (born 1984), Ethiopian footballer
Given name Abay Bokoleyev (born 1996), Kyrgyz footballer Abay Qunanbayuli (1845–1904), Kazakh poet Abay Tsehaye (1953–2021), Ethiopian politician Abay Weldu (born 1965), Ethiopian politician