Pilzgattungen: Kabatia [12 Taxa], Kabatiella [6 Taxa], Kabatina [1 Taxon], Kalchbrennera [1 Taxon], Kalmusia [42 Taxa], Kamatella [2 Taxa], Kamatia [4 Taxa], Kamatomyces [3 Taxa], Kameshwaromyces [2 Taxa], Kananascus [3 Taxa], Karlingia [4 Taxa], Karschia [12 Taxa], Karstenia [21 Taxa], Karstenula [5 Taxa], Kavinia [9 Taxa], Kawakamia [1 Taxon], Kazachstania [1 Taxon], Kazulia [2 Taxa], Keissleriella [26 Taxa], Kellermania [2 Taxa], Kellermanniopsis [1 Taxon], Kendrickomyces [6 Taxa], Keratinomyces [2 Taxa], Keratosphaera [1 Taxon], Kernella [3 Taxa], Kernia [17 Taxa], Kerniomyces [1 Taxon], Kernkampella [1 Taxon], Ketubakia [1 Taxon], Khuskia [296 Taxa], Kickxella [2 Taxa], Kiehlia [2 Taxa], Kilikiostroma [2 Taxa], Kiliophora [2 Taxa], Kionocephala [2 Taxa], Kionochaeta [58 Taxa], Kirramyces [347 Taxa], Kirschsteiniella [1 Taxon], Kirschsteiniothelia [33 Taxa], Klasterskya [10 Taxa], Klebahnia [29 Taxa], Kloeckera [5 Taxa], Kluyvera [1 Taxon], Kluyveromyces [5 Taxa], Kmetiopsis [4 Taxa], Kneiffia [12 Taxa], Knyaria [27 Taxa], Kokkalera [1 Taxon], Koleroga [11 Taxa], Konradia [3 Taxa], Koorchaloma [18 Taxa], Koorchalomella [3 Taxa], Koordersiella [2 Taxa], Kordyana [19 Taxa], Kordyanella [1 Taxon], Korfiella [2 Taxa], Korunomyces [4 Taxa], Kostermansinda [3 Taxa], Kostermansindiopsis [8 Taxa], Kramasamuha [3 Taxa], Kretzschmaria [199 Taxa], Kretzschmariella [10 Taxa], Kriegeriella [50 Taxa], Krombholzia [3 Taxa], Kroswia [4 Taxa], Kuehneola [74 Taxa], Kuehneromyces [40 Taxa], Kulkarniella [1 Taxon], Kumanasamuha [3 Taxa], Kusanoopsis [1 Taxon], Kutilakesa [3 Taxa], Kutilakesopsis [2 Taxa], Kweilingia [1 Taxon], Kylindria [31 Taxa]