R
- Rackerby, California – William M. Rackerby (first postmaster)
- Raleigh, North Carolina – Sir Walter Raleigh
- Rallsville, California – George W. Ralls (first postmaster)
- Ralston, California – William C. Ralston (mine owner)
- Randolph, Maine – Peyton Randolph (indirectly, via Randolph, Massachusetts)
- Randolph, Massachusetts – Peyton Randolph (first president of the Continental Congress)
- Randolph, New Hampshire – John Randolph (Virginia congressman and senator)
- Randolph, New York – Edmund Randolph (indirectly, via Randolph, Vermont)
- Randolph, Vermont – Edmund Randolph
- Rangeley, Maine – Squire James Rangeley, Jr. (proprietor)
- Rangeley Plantation, Maine – Squire James Rangeley, Jr. (proprietor)
- Rayl, California – David Rayl (hotelier and merchant)
- Raymond, California – T. Raymond (travel official)
- Raymond, Maine – Captain William Raymond
- Readsboro, Vermont – John Reade (landholder) (note spelling)
- Redding, Connecticut – John Read (landholder) (the spelling was changed to better reflect its pronunciation)
- Redmond, Oregon – Frank and Josephine Redmond (homesteaders)
- Redwine, California – Ida Redwine (first postmaster)
- Reed, California – John Reed (landowner)
- Reedley, California – Thomas Law Reed (founder and landowner)
- Reedsburg, Wisconsin – David C. Reed (settler)
- Reidsville, Georgia – Robert R. Reid (territorial governor of Florida)
- Reiff, California – John Reiff (first postmaster)
- Reno, Nevada – Jesse L. Reno
- Rensselaer, New York – Kiliaen van Rensselaer
- Revere, Massachusetts – Paul Revere
- Rheem, California – Donald I. Rheem (developer)
- Ricardo, California – Richard Hagen
- Richardson Springs, California – J.H. and Lee Richardson (early developers)
- Richland, Washington – Nelson Rich (state legislator and land developer)
- Richmond, Maine – Ludovic Stewart, 1st Duke of Richmond
- Richmond, Massachusetts and Richmond, New Hampshire – Charles Lennox, 3rd Duke of Richmond
- Ridleys Ferry, California – Thomas E. Ridley (ferry operator)
- Rienzi, Mississippi – Cola di Rienzo
- Rindge, New Hampshire – Captain Daniel Rindge (one of the original grant holders)
- Ripley, Maine – Brigadier General Eleazer Wheelock Ripley (of the War of 1812)
- Ritzville, Washington – Philip Ritz (settler)
- Robstown, Texas – Robert Driscoll Jr. (landowner)
- Rochester, New Hampshire – Laurence Hyde, 1st Earl of Rochester (brother-in-law to James II of England)
- Rochester, Minnesota – Colonel Nathaniel Rochester (indirectly, via Rochester, New York)
- Rochester, New York – Colonel Nathaniel Rochester
- Rockingham, Vermont – Charles Watson-Wentworth, 2nd Marquess of Rockingham
- Rockwood, California – Charles R. Rockwood (irrigation promoter)
- Rogersville, California – Lovely Rogers (local gold discoverer)
- Rohnerville, California – Henry Rohner (founder)
- Rollinsford, New Hampshire – descendants of Judge Ichabod Rollins (first probate judge for New Hampshire)
- Ross, California – James Ross (early settler)
Matthew Cambpell California; Matthew Campbell, A local huligan
- Ross Corner, California – W.C. Ross (early settler and merchant)
- Roswell, Georgia – Roswell King (founder)
- Rowe, Massachusetts – John Rowe (Boston merchant)
- Royalston, Massachusetts – Isaac Royal (landowner)
- Rumney, New Hampshire – Robert Marsham, 2nd Baron Romney (note spelling)
- Rumsey, California – Capt. D.C. Rumsey (early settler)
- Rushmore, Minnesota – S.M. Rushmore (pioneer)
- Rusk, Texas – Thomas Jefferson Rusk (signer of the Texas Declaration of Independence)
- Russell City, California – Frederick James Russell (town planner)
- Ryan, California – John Ryan (borax company official)
Read more about this topic: List Of American Places Named After People