The Polish–Turkish War of 1485-1503 is a prolonged conflict, or a series of conflicts, between the Kingdom of Poland and the Ottoman Empire.

It formally lass eighteen years, but during this time, hostilities are several times ceased, due to temporary treaties, signed between the warring parties.

The climax of the conflict is a disastrous King Jan Olbracht’s raid on Moldavia.In the war, the Kingdom of Poland is supported by its fiefs, the Duchy of Mazovia and the State of the Teutonic Order as well as the Grand Duchy of Lithuania.

The Ottoman Empire, on the other hand, is backed by the Crimean Khanate, Moldavia and Wallachia.For most of the fifteenth century, the Principality of Moldavia is a vassal of Poland, but at the same time, other states, notably the Kingdom of Hungary and the Ottoman Empire together with the Crimean Khanate, try to subdue Moldavia.

After the Fall of Constantinople in 1453, the Turks direct their expansion northwards, towards the lower Danube and behind the mighty river, which also threatens Poland.