- Labyrinth
- Lana (1948–1949, Atlas Comics)
- Last American, The (1990, Epic)
- Last Avengers Story, The (1995, Alterniverse)
- Last Defenders (2008)
- Last Hero Standing (2005)
- Last of the Dragons (1988, Epic)
- Last of the Mohicans Vol 1|Last of the Mohicans (2007, Marvel Illustrated)
- Last Starfighter, The
- Lawbreakers Always Lose! (1948-1949)
- Lawdog (1993-1994, Epic)
- Legion of the Night, The (1991)
- Legion of Monsters (1975)
- Lethal Foes of Spider-Man, The (1993)
- Life of Captain Marvel, The (1985)
- Life of Christ, The (1993, Nelson)
- Life of Pope John Paul II, The (1983)
- Light and Darkness War, The (1988, Epic)
- Li'l Kids (1970-1972])
- Li'l Pals (1970-1972])
- Little Aspirin (1949, Atlas Comics)
- Little Lana (1949–1950, Atlas Comics)
- Little Lenny (1949, Atlas Comics)
- Little Lizzie, Vol. 1 (1949–1950, Atlas Comics)
- Little Lizzie, Vol. 2 (1953–1954, Atlas Comics)
- Linda Carter, Student Nurse (1961–1963)
- Livewires (2005)
- Logan (All titles)
- Logan's Run (1977)
- Loners (2007)
- Longshot (All titles)
- Lorna the Jungle Girl (1954–1957, Atlas Comics)
- Lovers (1949–1957, Atlas Comics)
- Love Classics (1949–1950, Atlas Comics)
- Love Dramas (1949–1950, Atlas Comics)
- Love Romances (1949–1963, Atlas Comics)
- Love Secrets (1949–1950, Atlas Comics)
- Love Tales (1949–1952, 1954–1957, Atlas Comics)
- Love Trails (1949, Atlas Comics)
- Loveland (1949–1950, Atlas Comics)
- Luke Cage, Hero for Hire (1972)
- Lunatik (1995–1996)
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