| Country: | Japan |
| Flag Year: | 1870 |
| Type: | parliamentary |
| Next Election: | 1950 Japanese House of Councillors election |
| Next Year: | 1950 |
| Seats For Election: | 250 seats in the House of Councillors |
| Majority Seats: | 126 |
| Election Date: | 20 April 1947 |
| Image1: | Tetsu Katayama.jpg |
| Leader1: | Tetsu Katayama |
| Party1: | Japan Socialist Party |
| Seats1: | 47 |
| Popular Vote1: | 3,479,814 |
| Percentage1: | 16.36% |
| Leader2: | Ichirō Hatoyama |
| Party2: | Liberal Party (Japan, 1945) |
| Seats2: | 38 |
| Popular Vote2: | 1,360,456 |
| Percentage2: | 6.40% |
| Party3: | Democratic Party (Japan, 1947) |
| Seats3: | 28 |
| Popular Vote3: | 1,508,087 |
| Percentage3: | 7.09% |
| Image4: | Takeo Miki-2-1.jpg |
| Leader4: | Takeo Miki |
| Party4: | National Cooperative Party |
| Seats4: | 9 |
| Popular Vote4: | 549,916 |
| Percentage4: | 2.59% |
| Image5: | TOKUDA Kyuichi.jpg |
| Leader5: | Kyuichi Tokuda |
| Party5: | Japanese Communist Party |
| Seats5: | 4 |
| Popular Vote5: | 610,948 |
| Percentage5: | 2.87% |
| Posttitle: | President of the House of Councillors-designate |
| After Election: | Tsuneo Matsudaira |
| After Party: | Japan Socialist Party |
House of Councillors elections were held in Japan on 20 April 1947.[1] The Japan Socialist Party won more seats than any other party, although independents emerged as the largest group in the House. Most independents joined the Ryokufūkai parliamentary group in the first Diet session making it the largest group, and Ryokufūkai member Tsuneo Matsudaira was elected the first president of the House of Councillors.
| Prefecture | Total seats | Seats won | |||||||
|---|---|---|---|---|---|---|---|---|---|
| JSP | LP | DP | NCP | JCP | Others | Ind. | |||
| Aichi | 6 | 2 | 4 | ||||||
| Akita | 2 | 1 | 1 | ||||||
| Aomori | 2 | 1 | 1 | ||||||
| Chiba | 4 | 1 | 1 | 2 | |||||
| Ehime | 2 | 1 | 1 | ||||||
| Fukui | 2 | 1 | 1 | ||||||
| Fukuoka | 6 | 3 | 1 | 1 | 1 | ||||
| Fukushima | 4 | 1 | 1 | 1 | 1 | ||||
| Gifu | 2 | 1 | 1 | ||||||
| Gunma | 4 | 1 | 3 | ||||||
| Hiroshima | 4 | 1 | 3 | ||||||
| Hokkaido | 8 | 2 | 1 | 5 | |||||
| Hyōgo | 6 | 1 | 2 | 2 | 1 | ||||
| Ibaraki | 4 | 1 | 1 | 2 | |||||
| Ishikawa | 2 | 1 | 1 | ||||||
| Iwate | 2 | 2 | |||||||
| Kagawa | 2 | 1 | 1 | ||||||
| Kagoshima | 4 | 4 | |||||||
| Kanagawa | 4 | 1 | 2 | 1 | |||||
| Kōchi | 2 | 1 | 1 | ||||||
| Kumamoto | 4 | 1 | 1 | 2 | |||||
| Kyoto | 4 | 1 | 2 | 1 | |||||
| Mie | 2 | 1 | 1 | ||||||
| Miyagi | 2 | 1 | 1 | ||||||
| Miyazaki | 2 | 1 | 1 | ||||||
| Nagano | 4 | 1 | 1 | 1 | 1 | ||||
| Nagasaki | 2 | 1 | 1 | ||||||
| Nara | 2 | 1 | 1 | ||||||
| Niigata | 4 | 1 | 1 | 2 | |||||
| Ōita | 2 | 1 | 1 | ||||||
| Okayama | 4 | 1 | 1 | 1 | 1 | ||||
| Osaka | 6 | 2 | 2 | 2 | |||||
| Saga | 2 | 1 | 1 | ||||||
| Saitama | 4 | 1 | 2 | 1 | |||||
| Shiga | 2 | 2 | |||||||
| Shimane | 2 | 2 | |||||||
| Shizuoka | 4 | 2 | 2 | ||||||
| Tochigi | 4 | 1 | 2 | 1 | |||||
| Tokushima | 2 | 1 | 1 | ||||||
| Tokyo | 8 | 2 | 3 | 1 | 2 | ||||
| Tottori | 2 | 2 | |||||||
| Toyama | 2 | 1 | 1 | ||||||
| Wakayama | 2 | 2 | |||||||
| Yamagata | 2 | 2 | |||||||
| Yamaguchi | 2 | 1 | 1 | ||||||
| Yamanashi | 2 | 1 | 1 | ||||||
| National | 100 | 16 | 8 | 6 | 3 | 3 | 6 | 58 | |
| Total | 250 | 45 | 39 | 28 | 9 | 4 | 14 | 111 | |