|Dates||December 22, 1977 –|
January 3, 1978
|Venue(s)||5 (in 5 host cities)|
|Champions||Soviet Union (2nd title)|
|Goals scored||248 (9.92 per match)|
|Attendance||41,681 (1,667 per match)|
|Scoring leader(s)|| Wayne Gretzky|
The 1978 World Junior Ice Hockey Championships (1978 WJHC) was the second edition Ice Hockey World Junior Championship and was held from December 22, 1977, until January 3, 1978. The tournament was held in Canada, mainly in Montreal and Quebec City. The Soviet Union won its second consecutive gold medal, while Sweden won the silver, and Canada the bronze.