The 1990 Winter Pan American Games, officially known as the I Winter Pan American Games (Spanish: I Juegos Panamericanos de Invierno) and commonly known as Las Leñas 1990, were held in Las Leñas, Argentina, from 16 September to 22 September 1990.

[1] All sporting events took place at the Las Leñas Ski resort in Mendoza Province.

In 1988, members of PASO voted to hold the first Pan American Winter Games at Las Leñas, Argentina in September 1989.

Lack of snow however, forced the postponement of the games until 16–22 September 1990[2] when only eight countries sent 97 athletes to Las Leñas.

PASO awarded the second Pan American Winter Games to Santiago, Chile for 1993.