The Tōhoku proportional representation block (比例[代表]東北ブロック, Hirei [daihyō] Tōhoku burokku) is one of eleven proportional representation (PR) blocks for the House of Representatives in the Diet of Japan. It consists of the Tōhoku region, namely the prefectures of Aomori, Iwate, Miyagi, Akita, Yamagata and Fukushima. Upon the introduction of proportional voting at the 1996 general election, the block elected 16 Representatives to the House. The block's representation was reduced to 14 Representatives at the 2000 general election, and to 13 in the 2017 election.