| Landa | chimpanzee (?) | female | Battle of Two Worlds (Power Records) | Prefect of ape-human village, painter; only female prefect encountered by Burke, Virdon and Galen | |
| Lawgiver | orangutan | male | Battle for the POTA | Huston, John | |
| Lawgiver, the First | ape | Return to the POTA Ep. 4 "Tunnel of Fear" | apes call on the Supreme Council to act "in the name of the First Lawgiver" | ||
| Leeta | chimpanzee | female | POTA (2001) | Weisinger, Eileen | inhabitant of ape city of Derkein, friend of Ari |
| Leuric | human | male | POTA TV Ep. 14 "Up Above the World So High" | Aletter, Frank | inventor, determined to create flying glider; collaborates with chimpanzee Carsia |
| Limbo | orangutan | male | POTA (2001), POTA: Resistance | Giamatti, Paul | slave trader |
| Lisa | chimpanzee | female | Conquest of the POTA, Battle for the POTA | Trundy, Natalie | servant ape (Conquest), wife of Caesar (Battle), mother of Cornelius (Battle) |
| Lucius | chimpanzee | male | POTA (1968) | Wagner, Lou | inhabitant of Ape City; nephew of Dr. Zira; sympathetic to Taylor |