| IX Summer Universiade IX Лятна универсиада | |
| Host City: | Sofia, Bulgaria |
| Nations: | 78 |
| Athletes: | 2,939 |
| Events: | 102 in 10 sports |
| Opening: | August 17, 1977 |
| Closing: | August 28, 1977 |
| Opened By: | Todor Zhivkov |
| Stadium: | Vassil Levski Stadion |
| Previous: | 1975 Rome |
The 1977 Summer Universiade, also known as the IX Summer Universiade or World University Games, took place in Sofia, Bulgaria.