August 21, 1838
Battle of 1838 between Chile and Peru-Bolivia
Commercial treaty signed in 1838 between the Ottoman Empire and the United Kingdom
1838 siege of Callao during the War of the Confederation
1838 battle between Voortrekkers and Zulus
1838 clash between Aboriginal Australians and settlers
1838 labour riot in Kent, England
1838 riots in Stockholm, Sweden
Magnitude 7 earthquake (June 1838) affecting California from the San Francisco Peninsula to the Santa Cruz Mountains
Native American attack on white settlers in Texas (1838)
Skirmish in Latter Day Saint history