"The game gives us a great opportunity to feature the talent this league has and showcase the progress we've made," said Beckerman, the RSL captain.
Beckerman has two goals and three assists on the year. With the latest selection, he has now made the all-star game day roster five years in a row.
Rimando, whose 10 wins and .82 goals against average is tops for MLS starters this year, will back up FC Dallas goalkeeper Raul Fernandez.
It is Rimando's first selection to the game day roster since 2010.
For Beltran, this is his first all-star selection. The right back has one assist and has played a crucial role in an RSL defense that has allowed the second fewest goals in MLS.
All three RSL players are currently off with the U.S. national team as Gold Cup play continues through most of the month.
2013 MLS All-Star roster
Goalkeeper • Raul Fernández (FC Dallas), Nick Rimando (Real Salt Lake)
Defenders • Corey Ashe (Houston Dynamo), Matt Besler (Sporting Kansas City), Tony Beltran (Real Salt Lake), Aurélien Collin (Sporting Kansas City), Omar Gonzalez (LA Galaxy), DeAndre Yedlin (Seattle Sounders FC)
Midfielders • Kyle Beckerman (Real Salt Lake), Patrice Bernier (Montreal Impact), Tim Cahill (New York Red Bulls), Brad Davis (Houston Dynamo), Will Johnson (Portland Timbers), Mike Magee (Chicago Fire), Graham Zusi (Sporting Kansas City)
Forwards • Marco Di Vaio (Montreal Impact), Thierry Henry (New York Red Bulls), Robbie Keane (LA Galaxy), Camilo Sanvezzo (Vancouver Whitecaps FC), Chris Wondolowski (San Jose Earthquakes)