R
- Ralph Rapson
- Wallace Rayfield
- Robert Reamer
- Neel Reid
- James Renwick, Jr.
- Henry Hobson Richardson
- Theodate Pope Riddle
- Robert S. Roeschlaub
- Kevin Roche
- Martin Roche
- David Rockwell
- Simon Rodia
- John A. Roebling
- Isaiah Rogers
- James Gamble Rogers
- John Wellborn Root
- John Wellborn Root, Jr.
- James C. Rose
- T. Paterson Ross
- Arthur Rotch
- Emery Roth
- Wirt C. Rowland
- Paul Rudolph
Read more about this topic: List Of United States Architects