The 2019–20 Southern Football League season (known as the BetVictor Southern League, following a sponsorship deal with BetVictor) was the 117th in the history of the Southern League since its establishment in 1894. The league has two Premier divisions (Central and South) at step 3 of the National League System (NLS) and two Division One divisions (Central and South) at step 4 of the NLS. These correspond with Levels 7 and 8 of the English football league system.