B
- Rafael Baca, San Jose Earthquakes
- Rich Balchan, Columbus Crew
- Mehdi Ballouchy, San Jose Earthquakes
- Brandon Barklage, New York Red Bulls
- Darrius Barnes, New England Revolution
- Giles Barnes, Houston Dynamo
- Chad Barrett, Los Angeles Galaxy
- Kyle Beckerman, Real Salt Lake
- David Beckham, Los Angeles Galaxy
- Steven Beitashour, San Jose Earthquakes
- Tony Beltran, Real Salt Lake
- Joe Bendik, Portland Timbers
- Jerry Bengtson, New England Revolution
- Jair Benítez, FC Dallas
- Víctor Bernárdez, San Jose Earthquakes
- Patrice Bernier, Montreal Impact
- Austin Berry, Chicago Fire
- Matt Besler, Sporting Kansas City
- David Bingham, San Jose Earthquakes
- Chris Birchall, Columbus Crew
- Miller Bolaños, Chivas USA
- Corben Bone, Chicago Fire
- Emiliano Bonfigli, Real Salt Lake
- Martín Bonjour, Vancouver Whitecaps FC
- Nat Borchers, Real Salt Lake
- John Borrajo, New York Red Bulls
- Branko Bošković, D.C. United
- Bobby Boswell, Houston Dynamo
- Tristan Bowen, Chivas USA
- Kris Boyd, Portland Timbers
- Andrew Boyens, Los Angeles Galaxy
- Freddie Braun, Portland Timbers
- Justin Braun, Real Salt Lake
- Blake Brettschneider, New England Revolution
- Jeb Brovsky, Montreal Impact
- Will Bruin, Houston Dynamo
- Eric Brunner, Portland Timbers
- Edson Buddle, Los Angeles Galaxy
- Marc Burch, Seattle Sounders FC
- Teal Bunbury, Sporting Kansas City
- Bobby Burling, Chivas USA
- Jon Busch, San Jose Earthquakes
- Evan Bush, Montreal Impact
Read more about this topic: List Of Current Major League Soccer Players