| LH | Logan Huntzberger | fictional character from Gilmore Girls |
| LP | logical positivism | assertion that only statements verifiable through empirical observation are meaningful |
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Lola Bunny | fictional character from Looney Tunes |
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Lolita Milyavskaya | Russian singer, actress, TV and film director |
| LM | Londo Mollari | fictional character from Babylon 5 |
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Lone Ranger | fictional character from The Lone Ranger |
| L | LongBeachGriffy | YouTube channel |
| LA | Lord Asriel | fictional character from Northern Lights |
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Loreena McKennitt | Canadian musician and composer |
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Lorene Scafaria | American actress, film director and writer |
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Loren Gray | American singer, social media personality, and model from Pennsylvania |
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Lorenzo Ostuni | Italian YouTuber |
| LM | Lori Maddox | American groupie |
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Lorne Michaels | Canadian and American television producer, writer, and actor (born 1944) |
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Lorraine Kelly | Scottish presenter and journalist |
| LF | Lotte Frank | fictional character from Monster |
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Lotti Golden | American musician |
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Lou Andreas-Salomé | German-Russian essayist, philosopher, and psychoanalyst (1861–1937) |
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Lou Bega | German singer |
| L | Loudermilk | American comedy television series |
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Lou Dobbs | American conservative political commentator (1945–2024) |
| LS | Louie Simmons | American powerlifter and founder of Westside Barbell |
| L | Louis | fictional character from Beastars |
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Louisa Adams | First Lady of the United States from 1825 to 1829 |
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Louis Althusser | French Marxist philosopher (1918–1990) |
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Louis de Funès | French actor and comedian (1914–1983) |
| LB | Louise Belcher | fictional character from Bob's Burgers |
| LEP | Louise Elizabeth Phillips | Australian botanist |
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Louis III of France | King of France |
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Louis IV of France | King of Western Francia |
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Louis IX of France | King of France from 1226 to 1270 (1214–1270) |
| LP | Louis Pauwels | French journalist and writer (1920-1997) |
| LS | Louis Sass | American psychologist |
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Louis the Pious | King of Aquitaine |
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Louis the Stammerer | King of France |
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Louis V of France | King of France |
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Louis Walsh | Irish music manager and television personality |
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Louis XVII of France | King of France |
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Louis Zamperini | Italian-American middle distance runner and World War II veteran |
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Lou Reed | American rock musician (1942–2013) |
| LLS | Love Live! School Idol Project | Japanese media franchise |
| LP | Lovely Peaches | |
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Lowkey | British rapper |
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L. Todd Rose | Author - https://en.wikipedia.org/wiki/Todd_Rose |
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Lü Bu | Chinese warlord and general |
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Luca Pacioli | Italian father of accounting (*~1445 – †1517) |
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Lucia Bosé | Italian-born Spanish actress (1931-2020) |
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Lucian Freud | British painter and agravar (1922-2011) |
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Luciano Huck | Brazilian TV presenter |
| LM | Luciano Moggi | Italian football administrator |