The LXIV Legislature of the Mexican Congress was the meeting of the Mexican Congress of the Union that convened on 1 September 2018 and ended on 31 August 2021. It is composed of the 500 federal deputies and 128 senators elected in the 2018 Mexican general election. While the deputies will serve only in the LXIV Legislature, the senators, elected to six-year terms, will also form the Senate in the LXV Legislature, which will convene in 2021.