| Cultivar Name | Plant Size | Origin | Flower Color | Season | Source | Registered |
| 'Wagner's Petite' | Miniature | Unknown | Light-Purple | June into July | Wagner, Wally | .1985 |
| 'Walden' | Large | Sport | Pure-White | August | Unknown | --NR-- |
| 'Walden Green' | Medium | Unknown | - | August to September | Purtymun, Charles | .1999 |
| 'Waldo' | Large | Unknown | - | - | Sawyer, Rick | --NR-- |
| 'Walking on Sunshine' | Large | Hybrid | - | - | Scheer, Alttara | --NR-- |
| 'Walla Walla' | Large | Unknown | Pale-Lavender | June into July | Wade, Van | --NR-- |
| 'Wanda Dove' | Small | Unknown | - | - | Nyikos, Frank | --NR-- |
| 'War and Peace' | - | Hybrid | Red | - | Moore, Jeff | --NR-- |
| 'War Eagle' | Large | Unknown | - | - | Wade, Van | --NR-- |
| 'War Path' | Small | Hybrid | - | July into August | Goodwin, Randy | .2005 |
| 'Warwick Ballerina' | Large | Hybrid | Pale-Lavender | June into July | Jones, Gil & Walek, Kevin | .2009 |
| 'Wasabi' | Miniature | Unknown | Pale-Lavender | July | Nixon, Bill | .2006 |
| 'Wassup' | Large | Hybrid | Pale-Lavender | July into August | Crockett, Clyde | .2000 |
| 'Water Lily' | Large | Unknown | - | - | O'Harra, Russ | --NR-- |
| 'Watermelon Rind' | Small | Hybrid | - | - | Davis, Roy & Davis, Rhonda | --NR-- |
| 'Waukon Golden Pond' | Medium | Unknown | Med-Lavender | July into August | Axmear, Bob | --NR-- |
| 'Waving Wuffles' | Medium | Hybrid | Deep-Purple | July | Avent, Tony | .1995 |
| 'Wavy Edge' | Medium | Unknown | - | - | Jones, Gil | --NR-- |
| 'Waxwing' | Small | Unknown | - | - | Van Ostrand, John | --NR-- |
| 'Wee Fall' | Small | Unknown | - | - | Benedict, Dr Ralph (Herb) | --NR-- |
| 'Wee One' | Medium | Unknown | Light-Purple | - | Livingston, Ron | --NR-- |
| 'Weihenstephan' | Small | Hybrid | Pure-White | August | Mussel, Hermann & Klose, Heinz & Ruh, Peter | .2003 |
| 'Wellenspiel' | Small | Unknown | - | - | Kohlein, Fritz | --NR-- |
| 'West Point' | Large | Sport | Near-White | June into July | Malloy, Alex | --NR-- |
| 'West Point Hanky' | Small | Unknown | - | July into August | Freeman, Franc | .2010 |
| 'Wet Crocodile' | Medium | Unknown | Pale-Lavender | June into July | Schwarz, Jim | .2012 |
| 'Wetol' | Small | Unknown | - | - | Banyai, Bruce | --NR-- |
| 'Whappa' | Large | Unknown | Pale-Lavender | - | Livingston, Ron | --NR-- |
| 'Whippet' | Miniature | Unknown | - | - | Bastille, Jocelyne | --NR-- |
| 'Whippoorwill' | Miniature | Unknown | Light-Purple | June into July | Springer, Judy | --NR-- |
| 'Whiskey Sour' | Medium | Hybrid | Pale-Lavender | August | Solberg, Robert | .2002 |
| 'White Caps' | Medium | Unknown | Med-Lavender | - | Schmid, W. George | --NR-- |
| 'White Ceiling' | Medium | Hybrid | Pale-Lavender | July into August | Van Eechaute, Danny | .2006 |
| 'White Charger' | Large | Hybrid | - | July into September | Aden, Paul | .1986 |
| 'White Cloud' | Giant | Unknown | - | - | Balitewicz, Bob | --NR-- |
| 'White Edger' | Large | Unknown | Near-White | - | Aden, Paul & Zilis, Mark | .2010 |
| 'White Fairy' | Large | Sport | Pure-White | August to October | Unknown | --NR-- |
| 'White Gold' | Large | Unknown | Pale-Lavender | July | Unknown | --NR-- |
| 'White Heron' | Medium | Hybrid | Pure-White | August | Sugita, Hajime & Ruh, Peter | .2001 |
| 'White In August' | Medium | Unknown | Pure-White | August | Wade, Van | --NR-- |
| 'White Knight' | Large | Unknown | Pure-White | July into August | Krossa, Gus & Ruh, Peter | .2004 .2018 |
| 'White Mule' | Medium | Unknown | Pure-White | August | Summers, Alex & Ruh, Peter | .1998 |
| 'White Princess' | Small | Hybrid | Pure-White | August | Benedict, Dr Ralph (Herb) & Walek, Kevin | .2009 |
| 'White Tachi' | - | Unknown | Near-White | - | Unknown | --NR-- |
| 'White Triumphator' | Small | Unknown | Pure-White | - | Oudolf, Piet & Heemskerk, Gerardus | --NR-- |
| 'White Trouble' | Small | Sport | - | - | Schmid, W. George | --NR-- |
| 'White Trumpets' | Medium | Unknown | Near-White | July into August | Hensen, Karel & Williams, Frances | .1983 |
| 'Whitefish Dunes' | Medium | Hybrid | - | - | Moore, Jeff | --NR-- |
| 'Whizzer' | - | Unknown | - | July into August | Freeman, Franc | .2010 |
| 'Wide Receiver' | Large | Hybrid | Med-Lavender | June into July | Beilstein, Doug & Beilstein, Mardy | .2018 |
| 'Wild Strawberries' | Small | Unknown | - | - | Malloy, Alex | --NR-- |
| 'Wild Thing' (Ward) | Medium | Unknown | - | July into August | Ward, Dr Dick & Ward, Jane | .2009 |
| 'Wilderness Ridge' | - | Hybrid | - | - | Moore, Jeff | --NR-- |
| 'Willamette' | Large | Hybrid | Pure-White | August | Tompkins, Chet & Ruh, Peter | .2003 |
| 'William Henry Harrison' | Large | Unknown | - | - | Ruh, Peter & Ruh, Jean | .2010 |
| 'Wily Willy' | Small | Unknown | Pale-Lavender | September | Elslager, Ed | .1998 |
| 'Wings of Faith' | Large | Unknown | - | July | Snyder, Ron | .1991 |
| 'Winnebago' | - | Unknown | - | - | Wade, Van | --NR-- |
| 'Wonderful' | Miniature | Hybrid | - | - | Goodwin, Randy | .2005 |
| 'Wood Monster' | Giant | Unknown | - | July into August | Woods, Doyle & Schulz, Ed | .2011 |
| 'Woodland Green' | Large | Hybrid | Near-White | June | Simpers, Lucille & Ruh, Peter | .1990 |
| 'Woodland Lime' | Large | Unknown | - | June into July | Gilligan, Madelon | .2011 |
| 'Wookey Hole' | Small | Unknown | - | - | Terpening, Kent | --NR-- |
| 'Worldly Treasure' | Medium | Hybrid | Pale-Lavender | July | Goodwin, Randy | .2005 |
| 'Wu Ling' | Small | Unknown | - | - | Goodwin, Randy | --NR-- |
| 'Wundebar' (Harrison) | - | Unknown | Med-Lavender | July | Harrison, Dr Jamison | --NR-- |
| 'Wunv' | Medium | Hybrid | Light-Purple | July into August | Liu, Donghuan | .2016 |
| 'Wyandot' | Large | Unknown | - | - | Wade, Van | --NR-- |
| 'Wynnway' | Medium | Unknown | - | - | Unknown | --NR-- |
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