Ōtsuchi, Iwate
| Ōtsuchi 大槌町 | |
|---|---|
| New Ōtsuchi Town Hall, June 2013 | |
| Interactive map outlining Ōtsuchi | |
|   Location of Ōtsuchi in Iwate Prefecture | |
| Coordinates: 39°21′29.7″N 141°53′58″E / 39.358250°N 141.89944°E | |
| Country | Japan | 
| Region | Tōhoku | 
| Prefecture | Iwate | 
| District | Kamihei | 
| Area | |
|  • Total | 200.42 km2 (77.38 sq mi) | 
| Population  (October 10, 2020) | |
|  • Total | 11,004 | 
| • Density | 55/km2 (140/sq mi) | 
| Time zone | UTC+9 (Japan Standard Time) | 
| City symbols | |
| – Tree | Keyaki | 
| – Flower | Rhododendron | 
| – Bird | Common gull | 
| – Fish | Chum salmon | 
| Phone number | 0193-42-2111 | 
| Address | 1–3 Uemachi Ōtsuchi-chō, Kamihei-gun, Iwate 028-1192 | 
| Website | Official website | 
Ōtsuchi (大槌町, Ōtsuchi-chō) is a town located in Kamihei District, Iwate Prefecture, in the Tōhoku region of northern Japan. As of 1 March 2020, the town had an estimated population of 11,572 and a population density of 58 persons per km2 in 5308 households. The total area of the town is 200.42 square kilometres (77.38 sq mi).
Since 1973, the University of Tokyo has maintained a marine research laboratory in Ōtsuchi. It is called the International Coastal Research Center (ICRC) and is managed by the Atmosphere and Ocean Research Institute.