General elections were held in Japan on 27 February 1955. The result was a victory for the Japan Democratic Party, which won 185 of the 467 seats.^[1] Voter turnout was 76%.

1955 Japanese general election

← 1953 27 February 1955 1958 →
All 467 seats in the House of Representatives of Japan 234 seats needed for a majority
Turnout	75.83% (1.62pp)
First party Second party Third party   Leader Ichirō Hatoyama Taketora Ogata Mosaburō Suzuki Party Democratic Liberal Left Socialist Seats won 185 112 89 Seat change New 87 17 Popular vote 13,536,044 9,849,458 5,683,312 Percentage 36.57% 26.61% 15.35% Swing New 12.34pp 2.30pp   Fourth party Fifth party   Leader Jōtarō Kawakami Sanzō Nosaka Party Right Socialist Communist Seats won 67 2 Seat change 1 1 Popular vote 5,129,594 733,121 Percentage 13.86% 1.98% Swing 0.34pp 0.08pp
Prime Minister before election Ichirō Hatoyama Democratic Prime Minister after election Ichirō Hatoyama Democratic

On 15 November 1955, the Japan Democratic Party and the Liberal Party combined as the modern Liberal Democratic Party, which ruled Japan continuously until 1993. The Rightist Socialist Party of Japan and the Leftist Socialist Party of Japan also merged to form the Japan Socialist Party, which was Japan's largest opposition party in the 1955 system.