| Medial (Center) Variegation | Plant Size | Leaf Color | Var Color | Origin | Season | Source | Registered |
| 'Rain Forest Shooting Stars' | Medium | Dark-Green | Yellow | Sport | July into August | Owens, William & Owens, Jean | .2008 |
| 'Rainbow's End' | Small | Dark-Green | Yellow | TC Sport | August to September | Hansen, Hans & Shady Oaks Nursery | .2005 |
| 'Raindance' | Medium | Med-Green | Yellow | TC Sport | July | Walters Gardens | --NR-- |
| 'Rainy Day' | Medium | Med-Green | White | Hybrid | June into July | Ward, Dr Dick & Ward, Jane | .2014 |
| 'Ralph' | Large | Blue/Green | White | Unknown | July | O'Harra, Russ | --NR-- |
| 'Rare Breed' | Medium | Med-Green | White | Hybrid | June into July | Livingston, Ron & The American Hosta Society | .2019 |
| 'Raspberry Meringue' | Small | Dark-Green | Chartreuse | TC Sport | August | Zilis, Mark | .2003 |
| 'Raspberry Sundae' | Small | Dark-Green | White | Unknown | August to October | Korlipara, Harini & Gossett, Gary & Terra Nova Nurseries | --NR-- |
| 'Red Alert' | Small | Med-Green | White | Hybrid | July into August | Unknown | --NR-- |
| 'Red Socks' | Medium | Med-Green | Yellow | Unknown | - | Goodwin, Randy | --NR-- |
| 'Redback Tavern' | Medium | Med-Green | Yellow | Hybrid | - | Wrede, Arthur | --NR-- |
| 'Reese's Pieces' | Large | Blue/Green | Yellow | Unknown | | Ragland, Butch | --NR-- |
| 'Refiners Fire' | Large | Med-Green | Yellow | Hybrid | July | Lysne, Rod | .2019 |
| 'Reflecting Pool' | Medium | Med-Green | Yellow | Hybrid | - | Meyer, Bill | --NR-- |
| 'Regal Razzle Dazzle' | - | Med-Green | Light Green | Unknown | - | Trucks, Gary | --NR-- |
| 'Regal Twist' | Medium | Blue/Green | White | Sport | July into August | Schulte, Dave & Schulte, Don | .2007 |
| 'Reiho' | Small | Med-Green | White | Hybrid | - | Unknown | --NR-- |
| 'Reiho Nishiki' | Medium | Med-Green | Yellow | Sport | July | Watanabe, Kenji | --NR-- |
| 'Remember Me' | Medium | Blue/Green | Creamy White | Hybrid | July | Van Erven, Dirk & Van Eijk-Bos, Gert & Walters Gardens | .2001 |
| 'Remembered Always' | Miniature | Dark-Green | White | Unknown | - | Solberg, Robert | --NR-- |
| 'Rendez Vous' | Large | Blue/Green | Yellow | Unknown | | Ragland, Butch | --NR-- |
| 'Reverie' | Medium | Med-Green | Creamy White | Hybrid | August | Wilkins, Dr Jim & Wilkins, Sandy | .2003 |
| 'Reversed' | Medium | Blue/Green | Greenish White | Sport | July | Aden, Paul | .1978 |
| 'Revolution' | Medium | Med-Green | Creamy White | Sport | July | Van Eijk-Bos, Gert & Walters Gardens | .2000 |
| 'Rhino Hide' | Medium | Blue/Green | Yellow | Unknown | June into July | Rawson, Don | .2007 |
| 'Richland Charmer' | Large | Med-Green | Yellow | Sport | July | Wade, Van | .2000 |
| 'Richland Gold's Moonlight's Child' | Medium | Med-Green | White | Sport | July into August | Wade, Van | --NR-- |
| 'Richland Royal Prince' | Small | Med-Green | White | Hybrid | July into August | Wade, Van | --NR-- |
| 'Right On' | Small | Med-Green | White | Hybrid | August | Benedict, Dr Ralph (Herb) | --NR-- |
| 'Rikyu' | Medium | Med-Green | Yellow | Unknown | - | Fukatsu, Shinya | --NR-- |
| 'Ring Around the Moon' | Large | Blue/Green | Yellow | Sport | July into August | Johnson, Robert | .2004 |
| 'Ripple Effect' | Small | Med-Green | White | TC Sport | July into August | Walters Gardens & Bergeron, Amy | .2008 |
| 'Risky Business' | Large | Dark-Green | White | Sport | July | Hansen, Hans | .2002 |
| 'River's Mist' | Medium | Dark-Green | White | Unknown | - | Unknown | --NR-- |
| 'Robert's Rapier' | Medium | Dark-Green | White | Sport | July into August | Keller, Robert | .1996 |
| 'Rootin Tootin' | Medium | Blue/Green | Creamy White | Sport | July | Ziarek, Ken | --NR-- |
| 'Rosedale Grampa Jack' | Small | Light-Green | Yellow | Unknown | July | Hadrava, Jerry | --NR-- |
| 'Rosedale Lion's Mane' | Small | Med-Green | White | Unknown | July into August | Hadrava, Jerry | .2000 |
| 'Rosedale Melody of Summer' | Medium | Dark-Green | White | Sport | July | Hadrava, Jerry | --NR-- |
| 'Rosedale Watersprout' | Medium | Dark-Green | White | Unknown | June into July | Hadrava, Jerry | --NR-- |
| 'Roy Klehm' | Large | Blue/Green | Yellow | Sport | June into July | Hansen, Hans & Shady Oaks Nursery | .2007 |
| 'Royal Golden Jubilee' | Medium | Med-Green | Yellow | Sport | July | Ford, Richard & Ford, Mary | .2004 |
| 'Royal Standard' - Mediovariegated | - | Med-Green | Yellow | TC Sport | August to October | Unknown | --NR-- |
| 'Royal Tiara' | Small | Med-Green | White | TC Sport | July | Zilis, Mark | .1988 |
| 'Ruby Benedict' | Medium | Blue/Green | Yellow | Hybrid | - | Benedict, Dr Ralph (Herb) | .1991 |
| 'Ruffled Pole Mouse' | Miniature | Med-Green | White | Sport | July | Van den Top, Jan | --NR-- |
| 'Rumor Has It' (Sanford) | Medium | Dark-Green | Light Green | Unknown | - | Sanford, Matt | --NR-- |
| 'Runt' | Medium | Med-Green | Yellow | Unknown | | White, Brian | --NR-- |
| 'Rusty's Fine Line' | Large | Dark-Green | White | Sport | July into August | Rouillier, Denis | --NR-- |
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