The 1977 FIFA World Youth Championship was the inaugural staging of the FIFA World Youth Championship, hosted by Tunisia from 27 June to 10 July 1977, in three venues — Tunis, Sousse and Sfax.

The USSR U20s defeated Mexico U20s in a penalty shootout, in the final held at Tunis's Stade El Menzah.

The Tournament Committee was chaired by FIFA Vice-President Harry Cavan, who had spearheaded the creation of the World Youth Championship.

For a list of all squads that began play in the group stage of the tournament, see 1977 FIFA World Youth Championship squads The group winners advanced directly to the semifinals.

Guina of Brazil won the Golden Boot award for scoring four goals.