| Country: | Japan |
| Flag Year: | 1870 |
| Type: | parliamentary |
| Previous Election: | 1965 Japanese House of Councillors election |
| Previous Year: | 1965 |
| Next Election: | 1971 Japanese House of Councillors election |
| Next Year: | 1971 |
| Seats For Election: | 126 of the 250 seats in the House of Councillors |
| Majority Seats: | 126 |
| Election Date: | 7 July 1968 |
| Image1: | Eisaku Satō grayscaled and cropped to aspect ratio 3x4.jpg |
| Leader1: | Eisaku Satō |
| Party1: | Liberal Democratic Party (Japan) |
| Seats After1: | 137 |
| Seat Change1: | 3 |
| Popular Vote1: | 20,120,089 |
| Percentage1: | 46.7% |
| Swing1: | 0.5% |
| Leader2: | Tomomi Narita |
| Party2: | Japan Socialist Party |
| Seats After2: | 65 |
| Seat Change2: | 8 |
| Popular Vote2: | 8,542,199 |
| Percentage2: | 19.8% |
| Swing2: | 3.6% |
| Image3: | Yoshikatsu-Takeiri-3.png |
| Leader3: | Yoshikatsu Takeiri |
| Party3: | Kōmeitō (1962–1998) |
| Seats After3: | 24 |
| Seat Change3: | 4 |
| Popular Vote3: | 6,656,771 |
| Percentage3: | 15.5% |
| Swing3: | 1.8% |
| Image4: | Eiichi-Nishimura-1 (Cropped).png |
| Leader4: | Eiichi Nishimura |
| Party4: | Democratic Socialist Party (Japan) |
| Seats After4: | 10 |
| Seat Change4: | 3 |
| Popular Vote4: | 2,578,581 |
| Percentage4: | 6.0% |
| Swing4: | 0.1% |
| Image5: | The-Zenei-1962-December-Special-1.png |
| Leader5: | Kenji Miyamoto |
| Party5: | Japanese Communist Party |
| Seats After5: | 7 |
| Seat Change5: | 3 |
| Popular Vote5: | 2,146,879 |
| Percentage5: | 5.0% |
| Swing5: | 0.6% |
| President of the House of Councillors | |
| Posttitle: | President of the House of Councillors-designate |
| Before Election: | Kenzō Kōno |
| Before Party: | Liberal Democratic Party (Japan) |
| After Election: | Ken Yasui |
| After Party: | Liberal Democratic Party (Japan) |
House of Councillors elections were held in Japan on 7 July 1968,[1] electing half the seats in the House. The Liberal Democratic Party won the most seats, although this marked the first House of Councillors election in the LDP's history in which its share of the popular vote decreased when compared to the election prior to it.
| Constituency | Total seats | Seats won | ||||||
|---|---|---|---|---|---|---|---|---|
| LDP | JSP | Kōmeitō | DSP | JCP | Ind. | |||
| Aichi | 3 | 1 | 1 | 1 | ||||
| Akita | 1 | 1 | ||||||
| Aomori | 1 | 1 | ||||||
| Chiba | 2 | 2 | ||||||
| Ehime | 1 | 1 | ||||||
| Fukui | 1 | 1 | ||||||
| Fukuoka | 3 | 2 | 1 | |||||
| Fukushima | 2 | 2 | ||||||
| Gifu | 1 | 1 | ||||||
| Gunma | 2 | 2 | ||||||
| Hiroshima | 2 | 1 | 1 | |||||
| Hokkaido | 4 | 2 | 2 | |||||
| Hyōgo | 3 | 1 | 1 | 1 | ||||
| Ibaraki | 2 | 1 | 1 | |||||
| Ishikawa | 1 | 1 | ||||||
| Iwate | 1 | 1 | ||||||
| Kagawa | 1 | 1 | ||||||
| Kagoshima | 2 | 2 | ||||||
| Kanagawa | 2 | 1 | 1 | |||||
| Kōchi | 1 | 1 | ||||||
| Kumamoto | 2 | 2 | ||||||
| Kyoto | 2 | 1 | 1 | |||||
| Mie | 1 | 1 | ||||||
| Miyagi | 1 | 1 | ||||||
| Miyazaki | 1 | 1 | ||||||
| Nagano | 2 | 1 | 1 | |||||
| Nagasaki | 1 | 1 | ||||||
| Nara | 1 | 1 | ||||||
| Niigata | 2 | 1 | 1 | |||||
| Ōita | 1 | 1 | ||||||
| Okayama | 2 | 1 | 1 | |||||
| Osaka | 3 | 1 | 1 | 1 | ||||
| Saga | 1 | 1 | ||||||
| Saitama | 2 | 1 | 1 | |||||
| Shiga | 1 | 1 | ||||||
| Shimane | 1 | 1 | ||||||
| Shizuoka | 2 | 2 | ||||||
| Tochigi | 2 | 2 | ||||||
| Tokushima | 1 | 1 | ||||||
| Tokyo | 4 | 1 | 1 | 1 | 1 | |||
| Tottori | 1 | 1 | ||||||
| Toyama | 1 | 1 | ||||||
| Wakayama | 1 | 1 | ||||||
| Yamagata | 1 | 1 | ||||||
| Yamaguchi | 1 | 1 | ||||||
| Yamanashi | 1 | 1 | ||||||
| National | 51 | 21 | 12 | 9 | 4 | 3 | 2 | |
| Total | 127 | 69 | 28 | 13 | 7 | 4 | 5 | |