1981 Primera División de Fútbol Profesional

The 1981 Primera División de Fútbol Profesional season also known as the Copa Casino. At the end of the regular season, the top 4 teams took part in a Final series. FAS were named Champions after defeating Independiente 4–3 on penalties, after 1–1 draw.

List of foreign players in the league
This is a list of foreign players in 1981 Seasons. The following players:
 * 1) have played at least one apertura game for the respective club.
 * 2) have not been capped for the El Salvador national football team on any level, independently from the birthplace

Atletico Marte
 * None

C.D. Águila
 * 🇧🇷

Alianza F.C.
 * 🇦🇷

Chalatenango
 * 🇭🇳

FAS
 * 🇦🇷 Manolo Alvarez

(player released mid season) (player Injured mid season) Injury replacement player

Independiente
 * 🇧🇷 Alan Marcos de Queiroz Marquinho
 * 🇧🇷 Justino da Silva

Luis Ángel Firpo
 * 🇧🇷

Once Lobos
 * 🇬🇹 Ricardo Luis Carreno
 * 🇬🇹 Peter Sandoval Mersing

Santigueno
 * 🇭🇳

UES
 * 🇭🇳 Harry Ramon Bran