Monday Night Football (often abbreviated as MNF) is the branding used for broadcasts of National Football League (NFL) games that air on Monday nights. It originally ran on ABC from 1970 to 2005, before moving exclusively to sister network ESPN from 2006 to 2019. While still airing on ESPN, MNF returned to ABC in 2020 beginning with select ESPN simulcasts, later expanding to select ABC exclusive telecasts in 2022, and since 2023 ABC has aired the bulk of the games in simulcast with ESPN. In addition, ESPN2 features the Manningcast alternate telecast of select games, which was established in 2020, and since 2021, ESPN+ has served as the U.S. streaming home of MNF.

During its initial run on ABC, MNF became one of the longest-running U.S. television series, as well as one of the highest-rated, particularly among male viewers. Since 1993, it has been preceded by the ESPN 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 local games televised by a pay television network, the ESPN-exclusive games are also made available on an over-the-air station 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, on TV 2 Sport in Denmark, on Channel 5 in the United Kingdom, 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.