Lecompton (pronounced /lɪˈkɒmptən/) is a city in Douglas County, Kansas, United States. As of the 2010 census, the city population was 625.
Lecompton was the former territorial capital of Kansas from 1855–61, and during much of the 1850s, the Douglas County seat. During this time, the city played a major historical role in pre-Civil War America, as it was a hotbed of proslavery sentiment. This time period was known as Bleeding Kansas, due to the violence perpetrated by both the pro- and anti-slavery factions in the eastern part of the state.