| Lake | County | Latitude | Longitude |
| K C Lake | Arthur | 41.659034 | -101.657005 |
| Kanders Lake | Cuming | 42.000112 | -96.974871 |
| Kanes Lake | Cuming | 41.977106 | -96.927118 |
| Kea Lake | Buffalo | 40.668109 | -99.091503 |
| Keating Lakes | Colfax | 41.427003 | -97.049775 |
| Keller Lake | Cherry | 42.233228 | -101.980321 |
| Kennedy Lake | Sheridan | 42.105408 | -102.248379 |
| Kern Lake | Sheridan | 42.488872 | -102.087601 |
| Keys Lake | Sheridan | 42.417931 | -102.157144 |
| Kilpatrick Lake | Box Butte | 42.090221 | -103.291936 |
| Kings Lake | Douglas | 41.317222 | -96.302089 |
| Kinney Lake | Sheridan | 42.424027 | -102.093243 |
| Kirkman's Cove Lake | Richardson | 40.185428 | -95.991148 |
| Kirkmans Cove Lake | Richardson | 40.192896 | -95.998825 |
| Knox Lake | Grant | 42.056982 | -101.889874 |
| Krumpf Lake | Cherry | 42.131887 | -101.623711 |
| Kuesters Lake | Hall | 40.920218 | -98.294605 |