| Matsuo | |||
| Native Name Lang: | ja | ||
| Settlement Type: | Former municipality | ||
| Seal Type: | Emblem | ||
| Pushpin Map: | Japan | ||
| Pushpin Map Caption: | Location in Japan | ||
| Coordinates: | 39.9534°N 141.0659°W | ||
| Subdivision Type: | Country | ||
| Subdivision Name: | Japan | ||
| Subdivision Type1: | Region | ||
| Subdivision Name1: | Tōhoku | ||
| Subdivision Type2: | Prefecture | ||
| Subdivision Name2: | Iwate Prefecture | ||
| Subdivision Type3: | District | ||
| Subdivision Name3: | Iwate | ||
| Extinct Title: | Merged | ||
| Extinct Date: | September 1, 2005 (now part of Hachimantai) | ||
| Leader Title: | Mayor | ||
| Leader Title1: | Vice Mayor | ||
| Unit Pref: | Metric | ||
| Area Total Km2: | 234.85 | ||
| Population Total: | 6,786 | ||
| Population As Of: | September 1, 2005 | ||
| Population Density Km2: | 28.89 | ||
| Timezone1: | JST | ||
| Utc Offset1: | +09:00 | ||
| Blank Name Sec1: | City hall address | ||
| Module: |
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was a village located in Iwate District, Iwate Prefecture, Japan.
The village of Matsuo was created on April 1, 1889 within Kita-Iwate District with the establishment of the municipality system. Kita-Iwate and Minami-Iwate Districts merged to form Iwate District on March 29, 1898. On September 1, 2005, Matsuo, along with the towns of Ashiro and Nishine (all from Iwate District), was merged to create the city of Hachimantai and no longer exists as an independent municipality.
Matsuo was formerly known as the home of Japan's largest sulfur mine - the Matsuo Kōzan - and, later, as the home of the Matsukawa geothermal power plant. The iron and copper Matsuo mine was also located there before abandonment in 1971.
As of September 2005, the village had an estimated population of 6,786 and a population density of 28.89 persons per km2. The total area was 234.85 km2.
Friendship and cooperation cities:
