Siege of Goa (1570–1571)

Siege of Goa, 1570–1571
	Part of War of the League of the Indies
	; The island and city of Goa.
Date	28 December 1570 – 13 December 1571 (11 months, 2 weeks and 1 day)
Location	Goa, India
Result	Portuguese victory
Belligerents
Portuguese Empire	Sultanate of Bijapur
Commanders and leaders
Dom Luís de Ataíde	Ali Adil Shah I
Strength
3,650 men (siege start); 650 soldiers; 3,000 militia; ; >5,000 men (siege end); 25–100 ships	100,000 men 33,000 foot soldiers; 35,000 cavalry; 2,000 elephants; forced laborers; ; 350 guns
Casualties and losses
Unknown	8,000 to 12,000

The siege of Goa in 1570–1571 was a major military conflict between the Portuguese Empire and the Sultanate of Bijapur, as part of an alliance of Asian powers led by Ali Adil Shah I. This alliance aimed to expel the Portuguese from their strategic foothold in Goa, which was a crucial center for their colonial ambitions in Asia. The capital of Portuguese State of India was besieged by a large army commanded personally by Sultan Ali Adil Shah of Bijapur, in one of the greatest ordeals faced by the Portuguese in Asia, during which several of their strongholds were attacked simultaneously.

Viceroy Dom Luís de Ataíde organised the defence of Goa effectively and, after several months of spirited resistance by the Portuguese, the Sultan of Bijapur gave up the siege and signed a peace treaty favourable to Portugal. Dom Luís de Ataíde returned to Portugal in 1571 and was received in triumph at Lisbon by King Sebastian, who richly rewarded him and later reappoint him to the office of viceroy of India.