1966 World Ninepin Bowling Classic Championships
| Host city | Bucharest |
|---|---|
| Country | Romania |
| Nations | 8 |
| Athletes | 95 |
| Sport | 9-pins |
| Events | 6 |
| Opening | June 19, 1966 |
| Closing | June 25, 1966 |
The 1966 World Ninepin Bowling Classic Championships was the sixth edition of the championships and was held in Bucharest, Romania, from 19 to 25 June 1966.
In the men's competition the title was won by Romania in the team competition, Petre Purge and Constantin Rădulescu (Romania) in the pair competition and by Horst Bräutigam (East Germany) in the individual event. In the women's competition the title was won by Romania in the team competition, Marie Mikulčíková and Vlasta Šindlerová (Czechoslovakia) in the pair competition and by Vlasta Šindlerová (Czechoslovakia) in the individual event.