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1989 Copa Interamericana
Event	Copa Interamericana
	(Atl. Nacional won 4–0 on points)
First leg
Date	July 25, 1990
Venue	Atanasio Girardot, Medellín
Referee	Jorge Orellana (Ecuador)
Attendance	26,300
Second leg
Date	August 1, 1990
Venue	Olímpico Universitario, Mexico City
Referee	Juan P. Escobar (Guatemala)
Attendance	30,000
	← 1988 1990 →

The 1989 Copa Interamericana was the 12th. edition of the Copa Interamericana. The final was contested by Colombian club Atlético Nacional (champion of 1989 Copa Libertadores) and Mexican club Club Universidad Nacional (mostly known as "UNAM", winner of 1989 CONCACAF Champions' Cup). The final was played under a two-leg format in July–August 1990.^[1]

The first leg was held in Atanasio Girardot Stadium in Medellín, where Atlético beat UNAM 2–0. The second leg was played at Estadio Olímpico Universitario in Mexico City, where Atlético easily defeat the Pumas with a conclusive 4–1.^[1] Thus, the Colombian side won their first Copa Interamericana trophy.^[2]^[3]^[4]

Qualified teams

Team	Qualification	Previous app.
Atlético Nacional	1989 Copa Libertadores winner	(None)
UNAM	1989 CONCACAF Champions' Cup winner	1980

Estadio Atanasio Girardot (left) and Estadio Olímpico Universitario, venues for the series

July 25, 1990

First leg

Atlético Nacional	2–0	UNAM
	Report

Attendance: 26,300

Referee: Jorge Orellana (Ecuador)

Atlético Nacional

UNAM

August 1, 1990

Second leg

UNAM	1–4	Atlético Nacional
Nava 28' (o.g.) Restrepo 67' Galeano 70' Arango 87'	Report	Negrete 86' (pen.)

Attendance: 30,000

Referee: Juan Escobar (Guatemala)

UNAM

Atlético Nacional

^ ^a ^b 1989 Copa Interamericana by Erik Lugo and Osvaldo Gorgazzi on the RSSSF
^ "La primer Interamericana" on La Barra del Rey (blogsite)
^ "Copa Interamericana 1990: La segunda gloria del Rey de Copas" on De Colección (blogsite), 13 Mar 2009
^ Interamericana on Atlético Nacional site, 26 Apr 2017