| Lake | County | Latitude | Longitude |
| Jabu Lake | El Dorado | 38.865548 | -120.122414 |
| Jackass Lakes | Madera | 37.527770 | -119.349164 |
| Jacks Lake | Lassen | 40.809483 | -121.025720 |
| Jackson Meadows Rese | Nevada | 39.489416 | -120.544667 |
| Jakey Lake | Lassen | 40.477099 | -121.276986 |
| Jameson Lake | Santa Barbara | 34.491275 | -119.499894 |
| Jamison Lake | Plumas | 39.709694 | -120.699377 |
| Janes Reservoir | Modoc | 41.886889 | -120.768303 |
| Jenkinson Lake | El Dorado | 38.724503 | -120.553443 |
| Jennie Lake | Tulare | 36.680081 | -118.765660 |
| Jewelry Lake | Tuolumne | 38.162746 | -119.782334 |
| Joe Crane Lake | Madera | 37.625793 | -119.314737 |
| Johnson Lake | Tulare | 36.432643 | -118.337106 |
| Joiner Reservoir | Modoc | 41.276739 | -121.221851 |
| Josephine Lake | Siskiyou | 41.018151 | -122.945242 |
| Junction Lake | Madera | 37.495074 | -119.496933 |
| Junction Reservoir | Mono | 38.336217 | -119.477813 |
| June Lake | Mono | 37.788897 | -119.074044 |