| Kabatia valpellinensis | MycoBank | / Index Fungorum |
| Kabatiella apocrypta | MycoBank | / Index Fungorum |
| Kabatiella caulivora | MycoBank | / Index Fungorum |
| Kabatiella harpospora | MycoBank | / Index Fungorum |
| Kabatiella lini | MycoBank | / Index Fungorum |
| Kabatiella microsticta | MycoBank | / Index Fungorum |
| Kabatiella sorghi | ||
| Kabatiella sp. | MycoBank | / Index Fungorum |
| Kabatiella zeae | MycoBank | / Index Fungorum |
| Kabatina juniperi | MycoBank | / Index Fungorum |
| Kabatina mahoniae | MycoBank | / Index Fungorum |
| Kabatina populi | MycoBank | / Index Fungorum |
| Kabatina thujae | MycoBank | / Index Fungorum |
| Kallichroma glabra | ||
| Kallichroma tethys | MycoBank | / Index Fungorum |
| Kalmusia sarothamni | MycoBank | / Index Fungorum |
| Kalmusia scabrispora | MycoBank | / Index Fungorum |
| Kalmusia utahensis | MycoBank | / Index Fungorum |
| Kamatia indica | MycoBank | / Index Fungorum |
| Kappamyces laurelensis | MycoBank | / Index Fungorum |
| Karschia stygia | MycoBank | / Index Fungorum |
| Karstenula rhodostoma | MycoBank | / Index Fungorum |
| Kaskaskia gleditsiae | MycoBank | / Index Fungorum |
| Kathistes analemmoides | MycoBank | / Index Fungorum |
| Kathistes calyculata | MycoBank | / Index Fungorum |
| Kavinia alboviridis | MycoBank | / Index Fungorum |
| Kavinia himantia | MycoBank | / Index Fungorum |
| Kawasakia arxii | MycoBank | / Index Fungorum |
| Kazachstania aerobia | MycoBank | / Index Fungorum |
| Kazachstania africana | MycoBank | / Index Fungorum |
| Kazachstania aquatica | MycoBank | / Index Fungorum |
| Kazachstania barnettii | MycoBank | / Index Fungorum |
| Kazachstania bovina | MycoBank | / Index Fungorum |
| Kazachstania bulderi | MycoBank | / Index Fungorum |
| Kazachstania exigua | MycoBank | / Index Fungorum |
| Kazachstania gamospora | MycoBank | / Index Fungorum |
| Kazachstania heterogenica | MycoBank | / Index Fungorum |
| Kazachstania humatica | MycoBank | / Index Fungorum |
| Kazachstania jiainicus | MycoBank | / Index Fungorum |
| Kazachstania kunashirensis | MycoBank | / Index Fungorum |
| Kazachstania lodderae | MycoBank | / Index Fungorum |
| Kazachstania martiniae | MycoBank | / Index Fungorum |
| Kazachstania naganishii | MycoBank | / Index Fungorum |
| Kazachstania piceae | MycoBank | / Index Fungorum |
| Kazachstania pintolopesii | MycoBank | / Index Fungorum |
| Kazachstania rosinii | MycoBank | / Index Fungorum |
| Kazachstania servazzii | MycoBank | / Index Fungorum |
| Kazachstania siamensis | MycoBank | / Index Fungorum |
| Kazachstania sinensis | MycoBank | / Index Fungorum |
| Kazachstania slooffiae | MycoBank | / Index Fungorum |
| Kazachstania solicola | MycoBank | / Index Fungorum |
| Kazachstania spencerorum | MycoBank | / Index Fungorum |
| Kazachstania telluris | MycoBank | / Index Fungorum |
| Kazachstania transvaalensis | MycoBank | / Index Fungorum |
| Kazachstania turicensis | MycoBank | / Index Fungorum |
| Kazachstania unispora | MycoBank | / Index Fungorum |
| Kazachstania viticola | MycoBank | / Index Fungorum |
| Kazachstania yakushimaensis | MycoBank | / Index Fungorum |
| Kazachstania zonata | MycoBank | / Index Fungorum |
| Keissleriella caudata | MycoBank | / Index Fungorum |
| Keissleriella cladophila | MycoBank | / Index Fungorum |
| Keissleriella genistae | MycoBank | / Index Fungorum |
| Keissleriella gloeospora | MycoBank | / Index Fungorum |
| Keissleriella ocellata | MycoBank | / Index Fungorum |
| Keratinomyces ajelloi | ||
| Keratinomyces ceretanicus | MycoBank | / Index Fungorum |
| Keratinophyton durum | MycoBank | / Index Fungorum |
| Keratinophyton terreum | MycoBank | / Index Fungorum |
| Kernia bifurcotricha | MycoBank | / Index Fungorum |
| Kernia brachytricha | MycoBank | / Index Fungorum |
| Kernia geniculotricha | MycoBank | / Index Fungorum |
| Kernia hippocrepida | MycoBank | / Index Fungorum |
| Kernia hyalina | MycoBank | / Index Fungorum |
| Kernia nitida | MycoBank | / Index Fungorum |
| Kernia ovata | MycoBank | / Index Fungorum |
| Kernia pachypleura | MycoBank | / Index Fungorum |
| Kernia peruviana | MycoBank | / Index Fungorum |
| Kernia retardata | MycoBank | / Index Fungorum |
| Kernia spirochaeta | ||
| Kernia spirotricha | MycoBank | / Index Fungorum |
| Khuskia oryzae | MycoBank | / Index Fungorum |
| Kickxella alabastrina | MycoBank | / Index Fungorum |
| Kionocephala catenulata | MycoBank | / Index Fungorum |
| Kionochaeta ivoriensis | MycoBank | / Index Fungorum |
| Kionochaeta malaysiana | MycoBank | / Index Fungorum |
| Kionochaeta nanophora | MycoBank | / Index Fungorum |
| Kionochaeta pughii | MycoBank | / Index Fungorum |
| Kionochaeta ramifera | MycoBank | / Index Fungorum |
| Kionochaeta spissa | MycoBank | / Index Fungorum |
| Kirkomyces cordensis | MycoBank | / Index Fungorum |
| Kirramyces angophorae | MycoBank | / Index Fungorum |
| Kirramyces corymbiae | MycoBank | / Index Fungorum |
| Kirramyces destructans | MycoBank | / Index Fungorum |
| Kirramyces epicoccoides | MycoBank | / Index Fungorum |
| Kirramyces eucalypti | MycoBank | / Index Fungorum |
| Kirramyces gauchensis | MycoBank | / Index Fungorum |
| Kirramyces stellenboschiana | MycoBank | / Index Fungorum |
| Kirramyces toledana | MycoBank | / Index Fungorum |
| Kirramyces zuluensis | MycoBank | / Index Fungorum |
| Kirschsteiniella sp. | MycoBank | / Index Fungorum |
| Kirschsteiniella thujina | MycoBank | / Index Fungorum |
| Kirschsteiniothelia aethiops | MycoBank | / Index Fungorum |
| Kirschsteiniothelia elaterascus | MycoBank | / Index Fungorum |
| Kirschsteiniothelia maritima | MycoBank | / Index Fungorum |
| Kloeckera africana | MycoBank | / Index Fungorum |
| Kloeckera apiculata | MycoBank | / Index Fungorum |
| Kloeckera apiculata var. apis | MycoBank | / Index Fungorum |
| Kloeckera apis | MycoBank | / Index Fungorum |
| Kloeckera brevis | MycoBank | / Index Fungorum |
| Kloeckera corticis | MycoBank | / Index Fungorum |
| Kloeckera corticis var. corticis | MycoBank | / Index Fungorum |
| Kloeckera faecalis | MycoBank | / Index Fungorum |
| Kloeckera fluorescens | MycoBank | / Index Fungorum |
| Kloeckera japonica | MycoBank | / Index Fungorum |
| Kloeckera javanica | MycoBank | / Index Fungorum |
| Kloeckera javanica var. javanica | MycoBank | / Index Fungorum |
| Kloeckera javanica var. lafarii | MycoBank | / Index Fungorum |
| Kloeckera jensenii | MycoBank | / Index Fungorum |
| Kloeckera lafarii | MycoBank | / Index Fungorum |
| Kloeckera lindneri | MycoBank | / Index Fungorum |
| Kloeckera lindneri var. lindneri | MycoBank | / Index Fungorum |
| Kloeckera magna | MycoBank | / Index Fungorum |
| Kloeckera sp. | MycoBank | / Index Fungorum |
| Kloeckeraspora occidentalis | MycoBank | / Index Fungorum |
| Kloeckeraspora occidentalis var. yarrowii | ||
| Kloeckeraspora osmophila | MycoBank | / Index Fungorum |
| Kloeckeraspora vineae | MycoBank | / Index Fungorum |
| Kluyveromyces aestuarii | MycoBank | / Index Fungorum |
| Kluyveromyces africanus | MycoBank | / Index Fungorum |
| Kluyveromyces bacillisporus | MycoBank | / Index Fungorum |
| Kluyveromyces blattae | MycoBank | / Index Fungorum |
| Kluyveromyces bulgaricus | MycoBank | / Index Fungorum |
| Kluyveromyces cellobiovorus | MycoBank | / Index Fungorum |
| Kluyveromyces cicerisporus | MycoBank | / Index Fungorum |
| Kluyveromyces datilla | ||
| Kluyveromyces delphensis | ||
| Kluyveromyces dobzhanskii | MycoBank | / Index Fungorum |
| Kluyveromyces drosophilarum | ||
| Kluyveromyces fragilis | ||
| Kluyveromyces hubeiensis | MycoBank | / Index Fungorum |
| Kluyveromyces lactis | ||
| Kluyveromyces lactis var. drosophilarum | MycoBank | / Index Fungorum |
| Kluyveromyces lactis var. hansenii | ||
| Kluyveromyces lactis var. lactis | MycoBank | / Index Fungorum |
| Kluyveromyces lodderae | ||
| Kluyveromyces marxianus | ||
| Kluyveromyces marxianus var. bulgaricus | MycoBank | / Index Fungorum |
| Kluyveromyces marxianus var. dobzhanskii | MycoBank | / Index Fungorum |
| Kluyveromyces marxianus var. drosophilarum | MycoBank | / Index Fungorum |
| Kluyveromyces marxianus var. lactis | MycoBank | / Index Fungorum |
| Kluyveromyces marxianus var. marxianus | MycoBank | / Index Fungorum |
| Kluyveromyces marxianus var. saturnus | ||
| Kluyveromyces marxianus var. vanudenii | MycoBank | / Index Fungorum |
| Kluyveromyces marxianus var. wikenii | MycoBank | / Index Fungorum |
| Kluyveromyces nonfermentans | MycoBank | / Index Fungorum |
| Kluyveromyces phaffii | MycoBank | / Index Fungorum |
| Kluyveromyces phaseolosporus | ||
| Kluyveromyces piceae | MycoBank | / Index Fungorum |
| Kluyveromyces polysporus | MycoBank | / Index Fungorum |
| Kluyveromyces sinensis | MycoBank | / Index Fungorum |
| Kluyveromyces sp. | ||
| Kluyveromyces thermotolerans | MycoBank | / Index Fungorum |
| Kluyveromyces vanudenii | MycoBank | / Index Fungorum |
| Kluyveromyces veronae | MycoBank | / Index Fungorum |
| Kluyveromyces waltii | MycoBank | / Index Fungorum |
| Kluyveromyces wickerhamii | MycoBank | / Index Fungorum |
| Kluyveromyces wikenii | MycoBank | / Index Fungorum |
| Kluyveromyces yarrowii | MycoBank | / Index Fungorum |
| Kobayasia nipponica | MycoBank | / Index Fungorum |
| Kochiomyces dichotomus | MycoBank | / Index Fungorum |
| Kockovaella barringtoniae | MycoBank | / Index Fungorum |
| Kockovaella calophyllensis | ||
| Kockovaella calophylli | MycoBank | / Index Fungorum |
| Kockovaella cucphuongensis | MycoBank | / Index Fungorum |
| Kockovaella cucphuonginensis | ||
| Kockovaella imperatae | MycoBank | / Index Fungorum |
| Kockovaella litsea | ||
| Kockovaella litseae | MycoBank | / Index Fungorum |
| Kockovaella machilophila | MycoBank | / Index Fungorum |
| Kockovaella phaffii | MycoBank | / Index Fungorum |
| Kockovaella sacchari | MycoBank | / Index Fungorum |
| Kockovaella schimae | MycoBank | / Index Fungorum |
| Kockovaella thailandica | MycoBank | / Index Fungorum |
| Kockovaella vietnamensis | MycoBank | / Index Fungorum |
| Kodamaea anthophila | MycoBank | / Index Fungorum |
| Kodamaea kakaduensis | MycoBank | / Index Fungorum |
| Kodamaea nitidulidarum | MycoBank | / Index Fungorum |
| Kodamaea ohmeri | MycoBank | / Index Fungorum |
| Kohlmeyeriella tubulata | MycoBank | / Index Fungorum |
| Komagataea pratensis | MycoBank | / Index Fungorum |
| Komagataella pastoris | MycoBank | / Index Fungorum |
| Komagataella phaffii | MycoBank | / Index Fungorum |
| Komagataella pseudopastoris | MycoBank | / Index Fungorum |
| Kondoa aeria | MycoBank | / Index Fungorum |
| Kondoa malvinella | MycoBank | / Index Fungorum |
| Koorchaloma occidentale | MycoBank | / Index Fungorum |
| Koorchaloma okamurae | MycoBank | / Index Fungorum |
| Korunomyces terminaliae | MycoBank | / Index Fungorum |
| Kostermansinda magna | MycoBank | / Index Fungorum |
| Kramasamuha sibika | MycoBank | / Index Fungorum |
| Kregervanrija delftensis | MycoBank | / Index Fungorum |
| Kregervanrija fluxuum | MycoBank | / Index Fungorum |
| Kregervanrija pseudodelftensis | MycoBank | / Index Fungorum |
| Kretzschmaria clavus | MycoBank | / Index Fungorum |
| Kretzschmaria deusta | MycoBank | / Index Fungorum |
| Kriegeria eriophori | MycoBank | / Index Fungorum |
| Kuehneromyces lignicola | MycoBank | / Index Fungorum |
| Kuehneromyces mutabilis | MycoBank | / Index Fungorum |
| Kuehneromyces rostratus | MycoBank | / Index Fungorum |
| Kuehneromyces vernalis | MycoBank | / Index Fungorum |
| Kuehniella racovitzae | MycoBank | / Index Fungorum |
| Kumanasamuha sundara | MycoBank | / Index Fungorum |
| Kuraishia capsulata | MycoBank | / Index Fungorum |
| Kuraishia molischiana | MycoBank | / Index Fungorum |
| Kurtzmanomyces insolitus | MycoBank | / Index Fungorum |
| Kurtzmanomyces nectairei | MycoBank | / Index Fungorum |
| Kurtzmanomyces tardus | MycoBank | / Index Fungorum |
| Kutilakesopsis macalpinei | MycoBank | / Index Fungorum |
| Kuzuhaea moniliformis | MycoBank | / Index Fungorum |
| Kylindria triseptata | MycoBank | / Index Fungorum |