1978 Romika Cup – Singles
| Singles | |
|---|---|
| 1978 Romika Cup | |
| Champion |
 Guillermo Vilas
|
| Runner-up |
 Buster Mottram
|
| Final score | 6–1, 6–3, 6–3 |
Željko Franulović was the defending champion but lost in the semifinals to Buster Mottram.
Guillermo Vilas won in the final 6–1, 6–3, 6–3 against Mottram.
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