| Miss International 1978 | |
|---|---|
| Date | November 10, 1978 |
| Venue | Mielparque, Tokyo, Japan |
| Entrants | 43 |
| Placements | 5 |
| Debuts | |
| Withdrawals | |
| Returns | |
| Winner | Katherine Ruth United States |
Miss International 1978, the 18th Miss International pageant, was held on November 10, 1978 at the Mielparque in Tokyo, Japan. Katherine Ruth earned United States's second Miss International crown.