| Railroad arrives in Laramie | Tom Rea |
| Rawlins-area Mountain Bike Trails | |
| REA, Wyoming history of | Kerry Drake |
| Red Buttes BLM Interpretive Site | |
| Red Buttes, Battle of | Ellis Hein |
| Red Buttes, Oregon Trail landmark | WyoHistory.org |
| Red Cloud’s War | Emilene Ostlind |
| Red Fork Battle, 1876 | Gerry Robinson |
| Red Gulch Dinosaur Tracksite | |
| Red Onion Museum | |
| Reeb, James, civil rights martyr | Phil White |
| Reel, Estelle | Kerry Drake |
| Refinery business, Wyoming | Tom Mast |
| Register Cliff | |
| Register Cliff | WyomingHeritage.org, Wyoming State Historic Preservation Office |
| Reliance Tipple | |
| Reliance, Wyoming | Dick Blust, Jr. |
| Reshaw's Bridge | |
| Reshaw's Bridge | Jefferson Glass |
| Richards, DeForest | Wyoming State Archives |
| Richards, William | Wyoming State Archives |
| Ringo, Martin and J.P. Parker, Oregon Trail graves of | WyoHistory.org |
| Riverton Museum | |
| Robert Russin sculptures | |
| Roberts, LeaKae, Cokeville survivor oral history | Wyoming State Archives |
| Roberts, Rev. John | Warren Murphy |
| Rock Avenue | |
| Rock Avenue, Oregon Trail site of | WyoHistory.org |
| Rock Church | |
| Rock Springs Historical Museum | |
| Rock Springs Main Street | |
| Rock Springs Massacre | Tom Rea |
| Rock Springs Walking Tour | |
| Rock Springs, African American churches of | Brie Blasi |
| Rock Springs, Wyoming | Chris Propst |
| Rocky Mountain Herbarium | |
