The 1836–37 United States House of Representatives elections were held on various dates in various states between July 4, 1836, and November 7, 1837. Each state set its own date for its elections to the House of Representatives, either before or after the first session of the 25th United States Congress convened on September 4, 1837. With Arkansas and Michigan officially achieving statehood in 1836 and 1837, respectively, the size of the House was set at 242 seats.

The Anti-Masonic Party was the earliest third party in the United States. Formally a single-issue party, it strongly opposed Freemasonry in the United States. It was active from the late 1820s, especially in the Northeast, and later attempted to become a major party by expanding its platform to take positions on other issues. It declined quickly after 1832 as most members joined the new Whig Party; it disappeared after 1838.