The MLW National Openweight Championship is a professional wrestling championship created and promoted by the American professional wrestling promotion Major League Wrestling (MLW). The title was unveiled on April 18, 2019. The title's openweight nature, a division more common in Japanese professional wrestling, means that both heavyweight and middleweight wrestlers are eligible to challenge for it.

Major League Wrestling (MLW) is an American professional wrestling promotion based in New Rochelle, New York. The promotion was founded in 2002 in Philadelphia, Pennsylvania by former WWE writer Court Bauer. The promotion markets its product as "Hybrid Wrestling", with its roster featuring a mix of different wrestling styles.