The Reapportionment Act of 1929 was a combined census and apportionment bill passed by the United States Congress on June 18, 1929, that established a permanent method for apportioning a constant 435 seats in the U.S. House of Representatives according to each census.

​

This reapportionment was preceded by the Apportionment Act of 1911 and took effect after the 1932 election meaning that the House was never reapportioned as a result of the 1920 United States Census. Representation in the lower chamber has remained frozen until this day.