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| Nils Kreuger | Christian Krohg | Julius Kronberg | Peter Severin Kröyer | A. Köstler |
| Frederik Hendrik Kaemmerer | Frida Kahlo | Gottfrid Kallstenius | G. O. Kalmykow |
| Robert Kammerer | V. Kampf | Elisabeth Charlotta Karsten | Kasbek |
| Nikolai Kasatkin | |||
| Angelica Kauffmann | Heinrich Kauffungen | Herm. Kaufmann | Friedrich August Kaulbach |
| Hermann Kaulbach | Paul Kauzmann | Elmer Keene | Lorentz Keim |
| Kempel | William Sergeant Kendall | Kennedy | A. Kerer |
| M. Kessels | Adr. Thomas Key | A. Khayer | Kiessling |
| Kikugawa Yeizan | Yeend King | Alex Kircher | Eugen Kirchner |
| Otto Kirberg | Kiyonaga | Astrid Kjellberg-Juel, Sold | E. N. Klakatschewa |
| Hans Klatt | Theodor Kleehaus | H. Klein | J. Kleinschmidt |
| K. Klever | Fr. Klimes | Baron Klodt | L. Knaus |
| Ridgeway Knight | Imre Knopp | G. Koch | H. Koch |
| Joseph Anton Koch | Ludwig Koch | R. Kohtz | Ernst Kolbe |
| R. Komineck | Salomon Koninck | Walter Kopp | J. v. Koppay |
| Valdemar Kornerup | Anders Gustav Koskull | Mal. J. Kossak | Vasili A. Kotarbinsky |
| Iwan Koulikow | Boris Koustodiew | P. O. Kovalewski | |
| L. F. Kowalsky | Jean-Charles Krafft | Per Krafft d. ä | Ivan N. Kramskoi |
| Lucas Kranach | E. Krause | Nils Kreuger | Herm.G. Kricheldor |
| V. Krogh | Christian Krohg | Julius Kronberg | J. Krouthén |
| Franz Krüger | J. Kränzle | I. S. Kröyer | |
| Peter Severin Kröyer | Kucharski | Elsa af Kullberg | Axel Kulle |
| Axel T. Kulle | Jacob Kulle | Gustav Adolf Kuntz | Fritz Kärfve |
| Christen Köbke | Theodor Körner | A. Köstler |
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| Louis-Jean F. Lagrenée d.ä. | Léon Lhermite | Bruno Liljefors | Amalia Lindegren | J. E. Liotard |
| Nicolas Lafrensen | Kjell Lagemark | Wilhelmina Lagerholm | Louis-Jean Francois Lagrenée d.ä. |
| Nicolas Lancret | Charles Landelle | E. Landry | Edvin Henry Landseer |
| Lane | Laronze | E. Larsen | Johannes Larsen |
| Sinding Larsen | Jean Lasalle | Philip Alexius de László | Latouche |
| Fantin Latour | Samuel Laurenche | Jean Paul Laurens | Harold Lawes |
| Sir Thomas Lawrence | Ines Leander-Alner | Henri Lebasque | Charles Lebrun |
| Mme Vigée Lebrun | N. Leclerco | Doris Lee | Franz Lefler |
| C. P. Lehman | Wilhelm Leibl | Edmund Blair Leighton | Frederic Leighton |
| Ferdinand Leke | Madeleine Lémaire | C. Lemoch | A. von Lempoels |
| Joseph Lempoels | Franz von Lenbach | Jules-Eugene Lenepveu | C. A. von Lenoir |
| André Lens | Henry Lerolle | Karl Friedrich Lessing | Jack Levine |
| Isaak Levitan | Henri Levy | Lucas de Leyde | Judith Leyster |
| Léon Lhermite | Max Liebermann | Bruno Liljefors | Léonard Limousin |
| Frans Lindberg | Amalia Lindegren | Berndt Adolf Lindholm | Otto Lingner |
| John Linnel | Hilding Gunnar Oskar Linnqvist | Peter van Lint | Jean Etienne Liotard |
| Filippo Lippi | Alex Lizal | Stephan Lochner | Wilh. Loebell |
| H. Lof | |||
| Jacques Loo | Hendrik Willem van Loon | Waldemar Lorentzon | Pietro Lorenzetti |
| Claude Lorrain | Gaston Haustrate de Loth | Lorenzo Lotto | Karl Anton Paul Lotz |
| Philip James de Loutherbourg | P. Loverini | Désiré Lucas | Bernardino Luini |
| J. Lulvés | Aage Lund | Anker Lund | Johan Thomas Lundbye |
| Gorrit Lundens | Ad. La Lyre | Emma Löfstedt-Chadwick | E. L. Lövgren |
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| H. Mager | Edourd Manet | Carlo Maratta | Helmer Masolle | Corneille Max |
