The is a constituency that represents Yamanashi Prefecture in the House of Councillors in the Diet of Japan. It has two Councillors in the 248-member house.
The constituency represents the entire population of Yamanashi Prefecture. The district elects two Councillors to six-year terms, one at alternating elections held every three years. The district has 692,001 registered voters as of September 2015. The Councillors currently representing Yamanashi are: