| Rating | Plant | Thumbnail |
| Flowering Crabapple 'Radiant'
Malus |  |
| Apple 'Rainbow'
Malus | |
| Apple 'Ralls Janet'
Malus
Additional info: (aka Neverfail, Jefferson Pippin, Royal Janette) |  |
| Crabapple 'Ralph Shay'
Malus
Hybridized by Purdue University | |
| Apple 'Ramsdell Sweet'
Malus
Additional info: (aka Ramsdale’s Red Pumpkin Sweet, English Sweet, Hurlbut) | |
| Apple 'Rattle Core'
Malus
Additional info: (aka Rattler) | |
| Apple 'Razor Russet'
Malus | |
| Apple 'Red Apple'
Malus x domestica | |
 | Crabapple 'Red Barron'
Malus
Hybridized by Simpson Nursery |  |
| Apple 'Red Belflower'
Malus x domestica | |
| Apple 'Red Cox's Pomona'
Malus x domestica | |
| | Apple 'Red Delicious'
Malus x domestica |  |
| Apple 'Red Detroit'
Malus | |
| | Apple 'Red Fuji'
Malus pumila
Additional info: (aka Nagafu 6) | |
| Apple 'Red Gravenstein'
Malus x domestica | |
| Apple 'Red Horse'
Malus | |
| Flowering Crabapple 'Red Jade'
Malus
Hybridized by George Reed, Brooklyn Botanic Garden, 1953
Additional info: (PP1497) |  |
| Red Jewel Crabapple 'Red Jewel'
Malus
Hybridized by Collins, 1971
Additional info: (PP3267; aka Jewelcole) | |
| Apple 'Red Joaneting'
Malus x domestica | |
| Apple 'Red Jonagold'
Malus x domestica | |
| Apple 'Red Limbertwig'
Malus
Additional info: (aka Limbertwig, Mountain Limbertwig, Common Limbertwig) | |
| Apple 'Red McIntosh'
Malus x domestica | |
| Flowering Crabapple 'Red Peacock'
Malus
Hybridized by Father John L. Fiala, 1969; PP7022 |  |
| Apple 'Red Reese'
Malus
Additional info: (aka Reese) | |
| Apple 'Red Rome'
Malus x domestica |  |
| Crab Apple 'Red Sentinel'
Malus |  |
| Flowering Crabapple 'Red Splendor'
Malus
Hybridized by Bergeson Nursery, 1948 |  |
| Apple 'Red Wenatchee Delicious'
Malus x domestica | |
| Apple 'Redford'
Malus x domestica | |
| Apple 'Redfree'
Malus x domestica
Additional info: (aka Co-op 13) | |
| Apple 'Redgold'
Malus x domestica | |
| Apple 'Redstreak'
Malus x domestica | |
| Apple 'Regent'
Malus x domestica | |
| Apple 'Reine des Pommes'
Malus x domestica | |
| Apple 'Reineta do Caravia'
Malus x domestica | |
| Apple 'Reinette d' Anjou'
Malus x domestica | |
| Apple 'Reinette d'Armorique'
Malus x domestica | |
| Apple 'Reinette Grise de Portugal'
Malus x domestica | |
| Apple 'Reinette Jaeghers'
Malus x domestica | |
| Apple 'Reinette Ontz'
Malus x domestica | |
