Big Hat
| Full name | Nagano Wakasato Tamokuteki Sports Arena |
|---|---|
| Location | Nagano, Japan |
| Coordinates | 36°37′47″N 138°11′45″E / 36.62972°N 138.19583°E |
| Owner | Nagano City |
| Operator | M-Wave Co. |
| Capacity | 10,104 |
| Opened | 10 December 1995 |
The Big Hat (ビッグハット, Biggu Hatto) is an indoor ice hockey arena in Nagano, Japan with a capacity of 10,104 seated spectators. Its official name is the Nagano Wakasato Tamokuteki Sports Arena. The arena was completed and officially opened on December 10, 1995.