The 2017–18 Primera División de Fútbol Profesional season (also known as the Liga Pepsi) is the 19th season and 37th and 38th tournament of El Salvador's Primera División since its establishment of an Apertura and Clausura format.
The other champion, and the runner-up with the better aggregate record will qualify for the 2018 CONCACAF League.
Should the final of both tournaments features the same two teams, the semifinalist with the better aggregate record will qualify for CONCACAF League.
The relegated team was replaced by the 2016–17 Segunda División playoffs promotion winner.
Promoted from Segunda División de Fútbol Salvadoreño as of June, 2017.
Relegated to Segunda División de Fútbol Salvadoreño as of June, 2017.
Pasaquina was docked 6 points for failing to pay over players' wages.
In August 2017, Familia Galo, owners of Luis Angel Firpo, announced that they were putting the team up for sale.
[2] The sale was completed on September 16, to the Modesto Torres group for an unknown amount.
[5] A few days later Limeno, Pasaquina, Audaz and Chalatenango voted to return to the Primera division.
As a protest of the decision to return to the primera division, Lisandrohl Pohl and Vidal Hernandez resigned as president and vice president [6] Owing to financial problem and complaints from fan bases, the Modesto Torres group put Luis Angel Firpo up for sale, the second time for the year.