The 1983 FIFA World Youth Championship was the fourth edition FIFA World Youth Championship tournament, hosted from 2 June to 19 June 1983 in seven venues in Mexico — Guadalajara, Irapuato, León, Mexico City, Monterrey, Puebla and Toluca — where a total of 32 matches were played.

Brazil U20 defeated Argentina, 1–0, at Mexico City's Azteca Stadium to claim its inaugural tournament title of five.

This edition still retains the record average daily attendance of 36,099 in the tournament's history.

This test of Mexico's capacity and capability to host a major FIFA tournament was recognized in May to host the 1986 FIFA World Cup.

Geovani of Brazil won the Golden Boot award for scoring six goals.