| Miss International 1978 | |
|---|---|
| Date | November 10, 1978 |
| Venue | Mielparque, Tokyo, Japan |
| Entrants | 43 |
| Debuts | New Caledonia |
| Withdrawals | Indonesia, Lebanon, Malta, Puerto Rico, Sri Lanka, Thailand, Yugoslavia |
| Returns | Philippines |
| Winner |
Katherine Ruth |
Miss International 1978, the 18th Miss International pageant, was held on November 10, 1978 at the Mielparque in Tokyo, Japan. Katherine Ruth earned USA's second Miss International crown.