Eski Mosque or Old Mosque (, meaning "Old Mosque"), can refer to a number of mosques across the former Ottoman Empire:

Bulgaria Eski Mosque, Yambol, Bulgaria

Greece Church of the Acheiropoietos in Thessaloniki, known in Ottoman times as Eski Mosque Eski Mosque, Komotini

North Macedonia Eski Mosque, Kumanovo

Turkey Eski Mosque, Adana, now Yağ Camii Old Mosque, Edirne Old Mosque, Mersin Old Mosque, Tarsus

See also Eski Imaret Mosque, Istanbul, Turkey Purani Mosque (), Ghazipur, Uttar Pradesh, India Yeni Mosque (disambiguation)