Monday Night Football (often abbreviated as MNF) is the branding used for broadcasts of National Football League (NFL) games that primarily broadcast on Monday nights. It was originally broadcast on ABC from 1970 to 2005, before moving exclusively to sister network ESPN in 2006, which remains the main channel for the broadcast. In 2020, MNF returned to ABC in select simulcasts with ESPN, and in 2022, it began featuring select exclusive ABC telecasts. In addition, ESPN2 has aired alternate telecasts of selected games since 2020 as the Manningcast, while ESPN+ has streamed MNF simulcasts in the United States since 2021.

During its initial run on ABC, it became one of the longest continuously running American television series, and one of the highest-rated, particularly among male viewers. Since 1993, MNF has been preceded on ESPN by the pregame show Monday Night Countdown. Per an NFL broadcasting policy intended to allow those who do not subscribe to cable or satellite television to see games televised by a pay television network, games on ESPN are also made available on over-the-air television stations in each participating team's local market.

MNF is broadcast in Canada on TSN and RDS, in most of Australia on ESPN Australia, in Portugal on Eleven Sports and on TV 2 Sport in Denmark, and in some other regions of the world outside the U.S. on ESPN International. A Spanish-language version airs on ESPN Deportes in the U.S. and on ESPN International in Latin America, while a Portuguese version airs on ESPN Brasil.