The 1966 Individual Speedway World Championship was the 21st edition of the official World Championship to determine the world champion rider.[1][2][3][4][5][6]
In the final in Göteborg New Zealander Barry Briggs equalled the record of Ove Fundin by winning his fourth World title. Norwegian Sverre Harrfeldt took silver and Pole Antoni Woryna took bronze.[7] Ivan Mauger, a 26-year-old New Zealander who had won the European Final qualifier finished fourth.