| L'Aquila, Italy, Earthquake, Apr. 6, 2009 | 3 |
| La Libertad, El Salvador earthquake, May 3, 1965 | 1 |
| Lambesc (Provence), France Earthquake of Jun. 11, 1909 | 2 |
| Landers, California earthquake, June 28, 1992 | 16 |
| Lausanne, Switzerland earthquake, Mar. 1, 1584 | 2 |
| Liguria, Italy earthquake, Feb. 23, 1887 | 24 |
| Lima, Peru earthquake, Oct. 3, 1974 | 2 |
| Limon Province, Costa Rica Earthquake, Apr. 22, 1991 | 165 |
| Lisbon, Portugal earthquake, Nov. 1, 1755 | 99 |
| Lituya Bay, Alaska earthquake and mega-tsunami, July 9, 1958 | 29 |
| Livermore, California earthquake, Jan. 24, 1980 | 42 |
| Ljubljana, Slovenia earthquake, April 14, 1895 | 13 |
| Loma Prieta, California earthquake, Oct. 17, 1989 | 768 |
| Long Beach, California earthquake March 10, 1933 | 89 |
| Luzon, Philippines earthquake, July 16, 1990 | 3 |
| Luzon, Philippines earthquake, July 18, 1880 | 11 |
| Luzon, Philippines earthquake, Mar.16, 1892 | 1 |
| Lytle Creek, California earthquake, Sept. 12, 1970 | 5 |