1986 FIFA World Cup Group A

Group A of the 1986 FIFA World Cup was one of six groups of national teams competing at the 1986 FIFA World Cup. The group's first round of matches began on 31 May and its last matches were played on 10 June. Most matches were played at the Estadio Olímpico Universitario in Mexico City or at the Estadio Cuauhtémoc in Puebla. Eventual champions Argentina topped the group, joined in the second round by 1982 champions Italy as well as Bulgaria. South Korea were making their first appearance in the tournament since 1954.

Bulgaria vs Italy
Assistant referees:

Chris Bambridge (Australia)

Siegfried Kirschen (East Germany)

Argentina vs South Korea
Assistant referees:

Jesús Díaz (Colombia)

Gabriel González (Paraguay)

Italy vs Argentina
Assistant referees:

Alan Snoddy (Northern Ireland)

Antonio Marquez Ramirez (Mexico)

South Korea vs Bulgaria
Assistant referees:

Valeri Butenko (Soviet Union)

Ioan Igna (Romania)