• La Plata Peak 4370 m
• Ladron Peak 2807 m
• Lake Fork Peak 3926 m
• Lake Mountain (Utah) 2330 m
• Lake Peak 3781 m
• Lander Peak 3187 m
• Lane Peak 1832 m
• Laramie Peak 3131 m
• Larch Mountain (Clark County, Washington) 1061 m
• Larch Mountain (Multnomah County, Oregon) 1238 m
• Larch Mountain (Washington County, Oregon) 1052 m
• Lassen Peak 3187 m
• Laurel Mountain 3600 m
• Lava Butte 1530 m
• Laveaga Peak 1159 m
• Lavender Peak (Colorado) 4035 m
• Lavic Lake 1495 m
• Lead Mountain 1479 m
• Leavitt Peak 3527 m
• Lemah Mountain 2290 m
• Lembert Dome 2880 m
• Lexington Tower 2304 m
• Liberty Bell Mountain 2353 m
• Liberty Cap (California) 2076 m
• Liberty Peak 3362 m
• Lichtenberg 1781 m
• Lime Mountain (Maricopa County, Arizona) 1211 m
• Lincoln Peak (Vermont) 1212 m
• Little Annapurna 2573 m
• Little Baldy 2452 m
• Little Bear Peak 4279 m
• Little Chief Mountain 2908 m
• Little Dog Mountain 2624 m
• Little Giant Peak 4089 m
• Little Haystack Mountain (New Hampshire) 1463 m
• Little Sitkin 1188 m
• Little Tahoma 3395 m
• Little Yellow Mountain (North Carolina) 1678 m
• Littles Peak 3265 m
• Lituya Mountain 3634 m
• Livingston Peak 2833 m
• Lizard Head 3997 m
• Logan Peak 2959 m
• Logging Mountain 2611 m
• Lolo Peak 2785 m
• Loma Prieta 1155 m
• Lone Eagle Peak 3633 m
• Lone Mountain (New York) 1134 m
• Lone Peak 3430 m
• Lone Pine Peak 3945 m
• Lone Walker Mountain 2591 m
• Long Knife Peak 2982 m
• Long Valley 3390 m
• Longfellow Peak 2714 m
• Longs Peak 4345 m
• Looking Glass Rock 1210 m
• Lookout Mountain (Colorado) 2311 m
• Lookout Peak 4164 m
• Lost Arrow Spire 2112 m
• Lost Corner Mountain 2518 m
• Lost Lake Ridge 2170 m
• Lost Peak 2387 m
• Lost Ranger Peak 3637 m
• Loudoun Heights (Mountain) 1180 m
• Lower Wolfjaw Mountain 1272 m
• Lucero volcanic field 1573 m
• Ludlow Mountain 1019 m
• Luna Peak (Washington) 2533 m
• Lyon Mountain (Clinton County, New York) 1170 m