The 2020 Alabama Democratic presidential primary took place on March 3, 2020, as one of 15 contests scheduled on Super Tuesday in the Democratic Party primaries for the 2020 presidential election. The open primary allocated 52 pledged delegates towards the 2020 Democratic National Convention, distributed in proportion to the results of the primary, statewide and within each congressional district. The state was also given an additional 8 unpledged delegates (superdelegates), whose votes at the convention were not bound to the result of the primary.

Super Tuesday is the United States presidential primary election day in February or March when the greatest number of U.S. states hold primary elections and caucuses. Approximately one-third of all delegates to the presidential nominating conventions can be won on Super Tuesday, more than on any other day. The results on Super Tuesday are therefore a strong indicator of the likely eventual presidential nominee of each political party.