Ottoman–Venetian War (1537–1540)

Third Ottoman–Venetian War
	Part of the Ottoman–Venetian Wars and Spanish–Ottoman wars
	; The "Battle of Preveza" (1538) by Ohannes Umed Behzad, painted in 1866.
Date	23 July 1537 – 2 October 1540; (3 years, 2 months, 1 week and 2 days)
Location	Mediterranean Sea
Result	Ottoman victory
Belligerents
Holy League:; Republic of Venice; Spanish Empire Kingdom of Naples; Kingdom of Sicily; ; Republic of Genoa; Papal States; Knights of Malta	Ottoman Empire Regency of Algiers; ; ; France (until 1538)
Commanders and leaders
Andrea Doria ; Vincenzo Cappello ; Marco Grimani; Ferrante Gonzaga; Francisco de Sarmiento †	Suleiman the Magnificent; Selim II; Hayreddin Barbarossa; Şehzade Mehmed; Turgut Reis; Seydi Ali Reis; Sinan Reis

The Third Ottoman Venetian War (1537–1540) was one of the Ottoman–Venetian wars which took place during the 16th century. The war arose out of the Franco-Ottoman alliance between Francis I of France and Süleyman I of the Ottoman Empire against the Holy Roman Emperor Charles V. The initial plan between the two had been to jointly invade Italy, Francis through Lombardy in the North and Süleyman through Apulia to the South. However, the proposed invasion failed to take place.