The following is a list of players who appeared in at least one game for the Boston Reds franchise, which played in the Union Association in 1884.

• β= indicates Baseball Hall of Famer.
• $= indicates that this player was also a manager.
• *= indicates that no other information is known on this player.

• Tommy Bond
• Lew Brown
• James Burke
• Kid Butler

• Ed Callahan
• Ed Crane

• Charlie Daniels
• Clarence Dow

• Joe Flynn

• Walter Hackett

• John Irwin

• Tommy McCarthy β
• Jim McKeever
• Henry Mullin
• Tim Murnane $
• Murphy*

• Tom O'Brien

• Elias Peak

• Charlie Reilley
• John Rudderham

• Pat Scanlon
• Dupee Shaw
• Art Sladen
• Mike Slattery

• Fred Tenney

• Baseball-Reference
• Retrosheet