1822–23 United States House of Representatives elections

The 1822–23 United States House of Representatives elections were held on various dates in various states between July 1, 1822, and August 14, 1823. Each state set its own date for its elections to the House of Representatives before the first session of the 18th United States Congress convened on December 1, 1823. They occurred during President James Monroe's second term.

Following the congressional reapportionment based on the 1820 United States census, the House increased by 26 seats to a total of 213. Most relative population growth was in the West. This was the last House election during the virtually nonpartisan Era of Good Feelings and the largest midterm gain of seats by a President's party. The Democratic-Republican Party remained nationally dominant, and the Federalist Party limited to state and local influence.

This election heralded key change not apparent until the end of the 18th Congress. The four-way 1824 presidential election, in which all candidates ran as Democratic-Republicans, would result in no candidate winning an Electoral College majority. Representatives elected to the 18th Congress are often classified by how they voted in the 1825 contingent election, which after a controversial, unanticipated political deal chose John Quincy Adams President, triggering a new, rancorous, abruptly realigned period of partisanship.

This election marked the second time in American history where the incumbent president's party gained House seats in a midterm election while still losing seats in the Senate, this happened before in 1814 and again in 1902.