The Battle of Mactan (Gubot sa Mactan; Labanan sa Mactan; Batalla de Mactán) was a battle fought on a beach in Mactan Island (now part of Cebu, Philippines) between the forces of European explorer Ferdinand Magellan and local allies, and Lapulapu, the chieftain of the island, on the early morning hours of April 27, 1521. Magellan, a Portuguese-born commander serving the Spanish Empire who led an expedition that ultimately circumnavigated the world for the first time, commanded a small European contingent in an effort to subdue Mactan led by Lapulapu under the Spanish crown. The sheer number of Lapulapu's forces, compounded with issues on the location and armor, ultimately resulted in a disastrous defeat to the Europeans and the death of Magellan. Surviving members of Magellan's crew continued the expedition under the command of Juan Sebastian de Elcano, who completed the journey in September 1522.
The battle's exact details is lost to history, with Antonio Pigafetta's account being the only source for much of the known information today. It is remembered in the Philippines as the first battle won by a native Filipino against the Spanish forces, with Lapulapu being hailed as the country's first national hero. The Spanish Empire would continue to send expeditions to the archipelago with little to no success until Miguel Lopez de Legazpi's expedition to Cebu and Manila in 1565, starting a 333-year Spanish rule on the archipelago.
Magellan's expedition had left Spain in August 1519 on a mission to find a westward route to the Moluccas or Spice Islands. On March 16, 1521 (Julian calendar), Magellan sighted the mountains of what is now Samar. This event marked the arrival of the first documented Europeans in the archipelago. The following day, Magellan ordered his men to anchor their ships on the shores of Homonhon Island.
There, Magellan befriended Rajah Kolambu and Rajah Siagu, king of Limasawa, who guided him to Cebu. There he met Rajah Humabon, the Rajah of Cebu.