| Medial (Center) Variegation | Plant Size | Leaf Color | Var Color | Origin | Season | Source | Registered |
| 'Kabigan Falls' | Medium | Med-Green | White | Hybrid | | Van den Top, Jan | --NR-- |
| 'Kairyo Hinsyu' | Miniature | Med-Green | White | Sport | - | Unknown | --NR-- |
| 'Karen Marie' | Large | Dark-Green | White | Nat-Sport | July into August | Philips, Hugo | --NR-- |
| 'Kassel' | - | Med-Green | White | Unknown | - | Klose, Heinz | --NR-- |
| 'Kathy's Clown' | Large | Dark-Green | Yellow | Sport | July into August | Ripperger, Kathy | .2008 |
| 'Ken Marek' | Medium | Med-Green | Yellow | Unknown | - | Livingston, Ron | --NR-- |
| 'Kinakafu Aki', H. longipes sparsa | - | Med-Green | White | Sport | - | Unknown | --NR-- |
| 'Kinakafu' H. longissima | Small | Dark-Green | Yellow | Sport | September to October | Honda | --NR-- |
| 'Kinakafu Kiyosumi' | Large | Med-Green | Yellow | Sport | July | Unknown | --NR-- |
| 'Kinakafu Nagaba Mizu' | Small | Med-Green | Yellow | Sport | September | Unknown | --NR-- |
| 'Kinakafu Tachi' | Medium | Med-Green | Yellow | Sport | August | Unknown | --NR-- |
| 'King's Lady Laurita' | Medium | Dark-Green | Yellow | Unknown | - | King, Herb | --NR-- |
| 'King's Supremacy' | - | Dark-Green | Yellow | Unknown | - | King, Herb | --NR-- |
| 'Kingsize Shadow' | Medium | Med-Green | Yellow | Nat-Sport | June | Van den Top, Jan | --NR-- |
| 'Kingwood Center' | Medium | Blue/Green | Yellow | Sport | July | Applegate, Charles & Kingwood Center | .1993 .2018 |
| 'Kinmeji' | Small | Med-Green | Yellow | Hybrid | - | Shimizu, Toshirou | --NR-- |
| 'Kinugawa Nishiki Iwa' | Small | Med-Green | Yellow | Sport | August to September | Suzuki, Kichigoro | --NR-- |
| 'Kinu-no-yuki' | Medium | Med-Green | White | Hybrid | August to September | Unknown | --NR-- |
| 'Kiowa' | Medium | Blue/Green | Yellow | Sport | June into July | Goodwin, Randy | .2013 |
| 'Kismet' | Small | Med-Green | White | Sport | - | Malloy, Alex | --NR-- |
| 'Kiwi Classic' | Medium | Blue/Green | Yellow | Sport | July into August | Sligh, Barry | --NR-- |
| 'Kiwi Full Monty' | Medium | Blue/Green | White | Sport | July | Sligh, Barry | .2000 |
| 'Kiwi Ice Breaker' | - | Med-Green | Yellow | Unknown | - | Sligh, Barry | --NR-- |
| 'Kiwi Leap Frog' | Large | Dark-Green | White | Hybrid | July into August | Sligh, Barry | --NR-- |
| 'Kiwi Pete' | Medium | Blue/Green | Yellow | Unknown | - | Sligh, Barry | --NR-- |
| 'Kiwi Polar Bear' | Small | Med-Green | White | Unknown | - | Sligh, Barry | --NR-- |
| 'Kiwi Spearmint' | Small | Med-Green | White | Sport | July | Sligh, Barry | .1999 |
| 'Kiwi Sweetie' | Small | Med-Green | Yellow | Unknown | | Unknown | --NR-- |
| 'Kiwi Windmill' | Medium | Med-Green | Yellow | Unknown | | Unknown | --NR-- |
| 'Klaus von Klitzing' | Large | Dark-Green | Light Green | Unknown | June | Braun-Nauerz, Gaby | .2003 |
| 'Kogarashi Nakafu' | Miniature | Med-Green | Yellow | Sport | September | Unknown | --NR-- |
| 'Komyo Nishiki' | Small | Med-Green | White | Sport | August to October | Unknown | --NR-- |
| 'Krinkle Sister' | Large | Blue/Green | Yellow | Sport | July | Elslager, Ed | .2005 |
| 'Kristie Axmear' | Small | Dark-Green | White | Unknown | - | Axmear, Bob | --NR-- |
| 'Krossa Dressa' | Large | Blue/Green | White | Sport | - | Serafin, Viktoria | --NR-- |
| 'Kyokkou' | Miniature | Dark-Green | Yellow | Unknown | June into July | Unknown | --NR-- |
|