| Cultivar Name | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
| 'Daisy' | - | - | - | - | Duplicate | - | - | Duplicate Name | --NR-- |
| 'Daisy's Mom' | - | - | - | - | Unknown | - | - | Unknown | --NR-- |
| 'Dale's Blue Gray' | Large | Blue/Green | - | - | Unknown | Pale-Lavender | June into July | Maroushek, Lillian & Snyder, Ron | .1998 |
| 'Dan Dee Dan' | Large | Light-Green | Marginal | Yellow | Sport | Near-White | June into July | Seaver, Mildred | --NR-- |
| 'Dana Nicolette' | Medium | Blue/Green | - | - | Hybrid | Light-Purple | July | Weissenberger, Henry & Walek, Kevin | .2009 |
| 'Dancing Eddy' | - | - | - | - | Duplicate | - | - | Duplicate Name | --NR-- |
| 'Dandy Randy' | Large | Dark-Green | - | - | TC Sport | Pale-Lavender | July | Asch, Stuart | .2004 |
| 'Dandy's Pride' | Medium | Med-Green | Marginal | Yellow | Sport | Pale-Lavender | July into August | Elslager, Ed | .1999 |
| 'Daniel' | Miniature | Blue/Green | - | - | Hybrid | Pale-Lavender | - | Weissenberger, Henry | .1986 |
| 'Danny's Gift' | | Med-Green | | - | Unknown | - | - | Scheer, Alttara | --NR-- |
| 'Dapper Jim' | Medium | Med-Green | Streaked | Yellow | Hybrid | Pale-Lavender | August | Elslager, Ed | .1999 |
| 'Darke Craig' | Small | Med-Green | Marginal | White | Unknown | - | - | Unknown | --NR-- |
| 'Darla' | Small | Light-Green | - | - | Hybrid | - | - | Livingston, Ron | --NR-- |
| 'Däumling Felix' | - | - | - | - | Duplicate | - | - | Duplicate Name | --NR-- |
| 'Däumling Felix' | Miniature | Med-Green | - | - | Hybrid | Light-Purple | - | Jentsch, Klaus | --NR-- |
| 'Dave' | Medium | Yellow | Marginal | Green | Sport | Pale-Lavender | June into July | Kuk, Bob | .2011 |
| 'Dave's Dreadlocks' | - | - | - | - | Duplicate | - | - | Duplicate Name | --NR-- |
| 'David' | Large | Yellow | - | - | Unknown | - | - | Schwarz, Jim | --NR-- |
| 'Davin' | Small | Yellow | - | - | Unknown | Light-Purple | July | Wade, Van | --NR-- |
| 'Dawn' | Small | Yellow | - | - | Unknown | Light-Purple | July | Bond, Sandra | .2000 |
| 'Dawn Treader' | Small | Yellow | Marginal | Green | Sport | Near-White | July | Malloy, Alex | .2000 |
| 'Dawn's Early Glow' | - | - | - | - | Unknown | - | - | Wade, Van | --NR-- |
| 'Dawn's Morning Glow' | - | - | - | - | Unknown | - | - | Wade, Van | --NR-- |
| 'Dax' | Medium | Dark-Green | Medial | Green | Sport | Pale-Lavender | July into August | Dupre, Dirk | .2006 |
| 'Deane's Dream' | Medium | Blue/Green | - | - | Hybrid | Pale-Lavender | July into August | Solberg, Robert | .2000 |
| 'Deborah' | Large | Dark-Green | Marginal | White | Unknown | - | July into August | Schwarz, Jim | .2015 |
| 'Debra Sophia' | Large | - | - | - | Sport | Med-Lavender | July | Nash, Bill | --NR-- |
| 'Dee Do' | - | - | - | - | Unknown | - | - | Xavier-Sakr, Suzzane | --NR-- |
| 'Dee's Golden Jewel' | Large | Yellow | - | - | Hybrid | Pure-White | July | Walek, Kevin | .1996 |
| 'Delaney' | Small | Dark-Green | Marginal | White | Unknown | - | - | Goodwin, Randy | .2013 |
| 'Delia' | Small | Yellow | Marginal | Green | Sport | Pale-Lavender | June into July | Ford, Richard & Ford, Mary | .1995 |
| 'Delightful Dorothy' | Medium | Med-Green | Marginal | Yellow | Unknown | - | - | Benedict, Dr Ralph (Herb) | --NR-- |
| 'Demetriou's Gold' | Medium | Light-Green | - | - | Unknown | Med-Lavender | June into July | Demetriou, Brenda & Demetriou, John | .2001 |
| 'Dennis' | Giant | Light-Green | - | - | Unknown | - | - | Wade, Van | --NR-- |
| 'Devon Tor' | Giant | Med-Green | - | - | Hybrid | Light-Purple | June into July | Bowden, Roger & Ruh, Peter | .2005 |
| 'Diana' | - | Dark-Green | - | - | Unknown | - | - | Wade, Van | --NR-- |
| 'Diana Remembered' | Medium | Med-Green | Marginal | Creamy White | Sport | Near-White | August | Kulpa, John | .1997 |
| 'Diana's Hyacinth' | - | - | - | - | Hybrid | - | - | Ahlburg, Marlene | --NR-- |
| 'Diane's Fancy' | Medium | Blue/Green | Marginal | White | Sport | Med-Lavender | July into August | Seaver, Mildred | --NR-- |
| 'Dianne' | Medium | Yellow | Streaked | Yellow | Sport | Pale-Lavender | July | Owens, Clarence | .1985 |
| 'Dilys' | Medium | Blue/Green | - | - | Unknown | Light-Purple | July | Smith, Eric | --NR-- |
| 'Dinky Donna' | Medium | Med-Green | Streaked | Yellow | Sport | Pale-Lavender | June into July | Heemskerk, Gerardus | .2011 |
| 'Dino' | Large | Med-Green | Marginal | Yellow | Sport | Near-White | June | Van Eechaute, Danny | .2009 |
| 'Dixie's Memory' | - | Dark-Green | Marginal | Yellow | Hybrid | Pale-Lavender | June | Myers, Gary | .2018 |
| 'Doctor Bill-Bob' | Large | Blue/Green | - | - | Unknown | Near-White | - | Seaver, Mildred & Walek, Kevin | .2009 |
| 'Doctor Bob' | - | - | - | - | Duplicate | - | - | Duplicate Name | --NR-- |
| 'Domino' | Small | Med-Green | Marginal | White | Unknown | - | - | Benedict, Dr Ralph (Herb) | --NR-- |
| 'Domonique' | Small | Med-Green | Marginal | Yellow | Unknown | Pale-Lavender | August | Benedict, Dr Ralph (Herb) | --NR-- |
| 'Donald Samuel' | Large | Med-Green | Marginal | Yellow | Unknown | - | - | Wafler, Steve & Wafler, Anna | --NR-- |
| 'Donhead St. Andrew' | Medium | Dark-Green | Streaked | White | Unknown | - | - | Unknown | --NR-- |
| 'Donna' | Medium | Med-Green | - | - | Hybrid | Pale-Lavender | July into August | Graves, Butch | .2011 |
| 'Don's Gator Hide' | Large | Med-Green | - | - | Unknown | Med-Lavender | July into August | Rawson, Don | .2016 |
| 'Don's Pie Extreme' | Large | Med-Green | - | - | Hybrid | - | - | Unknown | --NR-- |
| 'Doreen' | Small | Light-Green | - | - | Unknown | Light-Purple | July into August | Klose, Heinz & Ruh, Peter & Ruh, Jean | .2009 |
| 'Dorothy' | Medium | Dark-Green | - | - | Hybrid | Light-Purple | August | Williams, Frances & The American Hosta Society | .1986 |
| 'Dorothy My Love' | - | - | - | - | Unknown | - | - | Unknown | --NR-- |
| 'Dorothy Rules' | Large | Blue/Green | Streaked | Yellow | Unknown | - | June into July | Elslager, Ed | --NR-- |
| 'Dorothy's Brass Band' | Medium | Yellow | - | - | Unknown | - | June into July | Benedict, Dr Ralph (Herb) & Walek, Kevin | .2009 |
| 'Dorothy's Child' | Medium | Med-Green | Streaked | White | Hybrid | Near-White | June | Kuenster, Rod | .2007 |
| 'Dorothy's Wedding Band' | Large | Blue/Green | Marginal | Creamy White | Unknown | - | - | Benedict, Dr Ralph (Herb) | --NR-- |
| 'Dorset Glenn' | Miniature | Light-Green | Streaked | White | Hybrid | Pale-Lavender | June into July | Kuenster, Rod | .2005 |
| 'Doyle's Baby' | Small | Dark-Green | Marginal | Yellow | Unknown | - | - | Woods, Doyle | --NR-- |
| 'Dr Bob' | - | - | - | - | Duplicate | - | - | Duplicate Name | --NR-- |
| 'Drake's Tail' | Medium | Blue/Green | - | - | Unknown | Near-White | - | Black, Gwen | --NR-- |
| 'Dreamboat Annie' | Medium | Med-Green | - | - | Hybrid | Near-White | August to September | Wasitis, Chick | .2011 |
| 'Drew's Standard' | Small | Dark-Green | Marginal | White | Unknown | - | July | Goodwin, Randy | .2009 |
| 'Dry Creek Grandma Aggie' | - | - | - | - | Unknown | - | - | Geers, Jeanie & Geers, Jerry | --NR-- |
| 'Duchess' | Small | Blue/Green | Marginal | Yellow | Sport | Light-Purple | July | Savory, Robert | .1982 |
| 'Duffy's Confusion' | - | - | - | - | Unknown | - | - | Uniquely Hostas | --NR-- |
| 'Duke' | Large | Blue/Green | - | - | Unknown | Near-White | June into July | Savory, Robert | .1988 |
| 'Dustin' | Medium | Med-Green | Marginal | White | Unknown | Pale-Lavender | July into August | Stone, David & Ruh, Peter | .1988 |
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