| L'Ultime Épreuve | 1983 | — | France |
| La Brigade chimérique | 2010 | Éditions Sans-Détour | France |
| La Clé des nuages | March 2021 | — | — |
| La Compagnie des glaces | February 1986 | Jeux Actuels | France |
| La Méthode du docteur Chestel | 1991 | Presses du Midi | France |
| Labyrinth Lord | 2007 | — | — |
| Labyrinths & Lycanthropes | 2009 | — | — |
| Lace & Steel | 1989 | — | Australia |
| Lacuna part 1. | 2006 | Memento Mori Theatricks | United States |
| Lady Blackbird | 2009 | One Seven Design | United States |
| Lamentations of the Flame Princess | 2010 | Lamentations of the Flame Princess | Finland |
| Land of Eem | 2025 | — | — |
| Land of the Rising Sun | 1980 | Fantasy Games Unlimited | United States |
| Lands of Adventure | 1983 | Fantasy Games Unlimited | United States |
| Lasers & Feelings | 2013 | One Seven Design | United States |
| Le Donjon de Naheulbeuk | June 2009 | — | France |
| Le Magicien d'Oz | 2006 | — | France |
| Legacy | 1978 | — | — |
| Legend in the Mist | 2025 | — | — |
| Legend of the Five Rings Roleplaying Game | 1997 | Alderac Entertainment Group | United States |
| Legend of the Five Rings Roleplaying Game (1st edition) | 1997 | — | — |
| Legend of the Five Rings Roleplaying Game (2nd ed.) | 2000 | Alderac Entertainment Group | United States |
| Legend of the Five Rings Roleplaying Game (3rd ed.) | 2005 | Alderac Entertainment Group | United States |
| Legend of the Five Rings Roleplaying Game (4th edition) | 2010 | — | — |
| Legend of the Five Rings Roleplaying Game (5th edition) | 2018 | — | — |
| Legends of Alyria | 2007 | — | — |
| Legends of Anglerre | 2010 | Cubicle 7 | United Kingdom |
| Legionnaire | 1990 | — | — |
| Lejendary Adventure | 1999 | Troll Lord Games | United States |
| Les Chants de Loss | 2019 | — | — |
| Les Chroniques des Féals | February 2012 | Éditions Sans-Détour | France |
| Les Errants d'Ukiyo | 2012 | — | France |
| Les Lames du cardinal | 2014 | Éditions Sans-Détour | France |
| Les Mille-Marches | 2011 | Éditions John Doe / Chibi | France |
| Les Quatre de Baker Street | — | — | — |
| Leverage: The Roleplaying Game | 2010 | Margaret Weis Productions | United States |
| Lex Arcana | 1993 | Dal Negro | Italy |
| Libreté | 2017 | — | — |
| Little Fears | 2001 | — | — |
| Little Wizards | 2005 | — | — |
| Living Steel | 1987 | — | — |
| Lohikäärmepuu | 1993 | — | Finland |
| Lone Wolf (roleplaying game) | 2004 | Mongoose Publishing | United States |
| Lord of the Rings Adventure Game | 1999 | Iron Crown Enterprises | United States |
| Lords of Creation | 1983 | Avalon Hill | United States |
| Lords of Gossamer & Shadow | 2013 | — | — |
| Lost in the rain | 2014 | — | France |
| Love in the Time of Seið | 2010 | Bully Pulpit Games | United States |
| Lovecraftesque | 2015 | Black Armada Games | United Kingdom |
| Lycéenne RPG | 1996 | — | France |
| Lyonesse | 1999 | — | Switzerland |
| Légendes | 1983 | Jeux Descartes | France |
| Légendes Celtiques | 1987 | Jeux Descartes | France |