The 2023 NFL season was the 104th season of the National Football League (NFL). The regular season began on September 7, 2023, with defending Super Bowl LVII champion Kansas City losing to Detroit in the NFL Kickoff Game, and ended on January 7, 2024.

Monday Night Football 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.