MLS Commissioner Don Garber made the announcement at a news conference Wednesday at downtown Miami's museum plaza. Beckham and Miami-Dade County Mayor Carlos Gimenez also attended.
Beckham's ownership group now will work with the league and local officials in building a privately funded stadium, MLS said in confirming earlier media reports that Beckham planned a team in Miami.
"Miami is a vibrant, diverse community that thrives on the same type of energy that fuels the international appeal of soccer, and I look forward to a dedicated, long-term partnership with this dynamic city and Major League Soccer," Beckham said in a statement.
The soccer superstar would become the first former MLS player to own a team in the league.
Beckham, 38, the former captain of England's national team whose 20-year career included playing for the
"We appreciate all that David has done as a player, an ambassador and as a global icon to help grow Major League Soccer," MLS Commissioner Don Garber said in a statement.
The league currently has 19 teams with expansion clubs in New York and Orlando scheduled to begin play next year. The MLS also plans to add three additional expansion teams by 2020, including Beckham's team.