Conflicts in 1837

war in South America between 1836 and 1839

1835–1842 war in Florida

The Cabanagem (; 1835–1840) was a popular revolution and pro-separatist movement that occurred in the then province of Grão-Pará, Empire of Brazil.

1837 battle of the Afghan–Sikh Wars

The Sabinada (1837–1838) was a revolt by military officer Francisco Sabino that occurred in Brazil's Bahia province between 6 November 1837 and 16 March 1838. The rebels proposed the existence of a Bahian Republic of a transitory nature until Emperor Dom Pedro II reached the age of majority. Calling for the abolition of slavery and the redistribution of land, they fought against the government for one year until their capital of Salvador was conquered.

1837 battle of the First Carlist War

1837 action by Qajar Persia that preceded the Anglo-Persian War

1837 siege at the Algerian city of Constantine

Kurdish uprising led by Muhammad Pasha of Rawanduz against the Ottoman Empire in 1830–1838, aiming to expand his autonomy and assert control over neighboring territories

1837 battle of the First Carlist War