- Kabuki (2004, Icon)
- Ka-Zar, Vol. 1 (1970–1971)
- Ka-Zar, Vol. 2 (1974–1977)
- Ka-Zar, Vol. 3 (1981–1985)
- Ka-Zar, Vol. 4 (1997–1998)
- Ka-Zar, Vol. 5 (2011–)
- Kathy (1959–1964, Atlas Comics)
- Kellys, The (1950, Atlas comics)
- Kent Blake of the Secret Service (1951–1953, Atlas Comics)
- Kick-Ass (2008-current, Icon)
- Kickers Inc. (1986–1987, New Universe)
- Kid Colt: Hero of the West (1948, Timely Comics)
- Kid Colt Outlaw (1949–1979, Atlas Comics)
- Kid from Dodge City, The (1957, Atlas Comics)
- Kid from Texas, The (1957, Atlas Comics)
- Kid Komics (1943–1946, Atlas Comics)
- Kid Movie Komics (1946, Atlas Comics)
- Kid Slade, Gunfighter (1957, Atlas Comics)
- Killpower: The Early Years (1993, Marvel UK)
- Killraven, Vol. 1 (2001, Marvel Knights)
- Killraven, Vol. 2 (2002–2003)
- King Arthur and the Knights of Justice (1993–1994)
- King Conan (1980–1983)
- Kingpin, Vol. 1 (1997)
- Kingpin, Vol. 2 (2003–2004)
- King-Size Cable Spectacular (2008)
- King-Size Hulk (2008)
- Kissnation (1996)
- Kitty Pryde (All titles)
- Klaws of the Panther
- Knights of Pendragon (All titles)
- Komic Kartoons (1945, Timely)
- Krazy Komics, Vol. 1 (1942–1947, Atlas Comics)
- Krazy Komics, Vol. 2 (1948, Timely Comics)
- Krazy Krow (1945, Atlas Comics)
- Kree-Skrull War: starring The Avengers (1983)
- Krull (1983)
- Kull The Conqueror (All titles)
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