| Lake Tanzawa | |
| Pushpin Map: | Japan Kanagawa Prefecture |
| Location: | Kanagawa Prefecture |
| Coords: | 35.4167°N 142°W |
| Type: | reservoir |
| Inflow: | Kurokuragawa, Yozukugawa, Nakagawa |
| Outflow: | Kōchigawa |
| Basin Countries: | Japan |
| Length: | 2.1km (01.3miles) |
| Width: | 5km (03miles) |
| Area: | 2.18km2 |
| Volume: | 0.0649km3 |
| Elevation: | 320m (1,050feet) |
, is a lake located to the east of Mt. Fuji in Yamakita town, Ashigarakami district, in the Kanagawa Prefecture of Japan. The lake and its surroundings are frequently visited during fall to admire autumn colors.
This Lake was created due to construction of the Miho dam in 1978.
By Fujikyu Shonan Bus from Odakyu Line Shin-Matsuda Station, or JR Gotemba Line Yaga Station.[1]