The 1990 World Junior Ice Hockey Championships (1990 WJHC) was the 14th edition of the Ice Hockey World Junior Championship and was held mainly in Helsinki, Finland.

The 1990 tournament was a round-robin format, with the top three teams winning gold, silver and bronze medals respectively.

Eight teams contested the second tier this year in Bad Tölz West Germany from March 26 to April 4.

Pool C was contested by seven teams in Eindhoven Netherlands from March 16 to 25.

The South Korean juniors made their debut this year.