CRATER LAKE, Oregon
- Type: Volcanic Crater
- Diameter: 9.6 km
- Eruption: 7,700 (± 150) years
- Location: N 42° 57′ W 122° 06.4′



Crater Lake, is a caldera lake located in the south-central region of the U.S. state of Oregon. The lake partly fills a nearly 2,148-foot (655 m) deep caldera that was formed around 7,700 (± 150) years ago by the collapse of the volcano Mount Mazama.

The eruption dispersed almost 70 cubic kilometres of the mountain over western North America.
