The Moravian-Silesian Football League (MSFL) (Czech: Moravskoslezská fotbalová liga) is one of the third level football leagues in the Czech Republic (the other is the Bohemian Football League) headquartered in Olomouc. The league comprises teams from the historic regions of Moravia and Silesia and partially also Bohemia.

The league was formed in 1991 during the Czechoslovakia era, replacing the former II.ČNL (II. Česká národni liga; Second Czech National League) at the third tier of Czechoslovak football alongside sister league ČFL.

The winner of MSFL is promoted to the Czech National Football League. Three clubs are promoted to the MSFL - the winners of Divize D, E and F of the Czech Fourth Division.

The "Czech Republic 3. Ligy" is a prominent football tournament that serves as the third tier of the Czech football league system. Established to promote competitive play and develop local talent, this league features a diverse array of clubs from across the country, showcasing the rich footballing culture of the Czech Republic.

The tournament typically consists of multiple regional groups, with teams competing in a round-robin format. Each season, clubs battle for promotion to the higher tiers, while also striving to avoid relegation to the lower divisions. The league is known for its passionate fan base, with local supporters rallying behind their teams, creating an electric atmosphere at matches.

The "Czech Republic 3. Ligy" not only provides a platform for emerging players to showcase their skills but also serves as a vital stepping stone for clubs aiming to ascend the ranks of Czech football. With a mix of historic clubs and ambitious newcomers, the tournament promises thrilling matches, intense rivalries, and unforgettable moments, making it a key component of the Czech football landscape.