The 1966 Campeonato Ecuatoriano de Fútbol () was the 8th national championship for football teams in Ecuador. Barcelona won their third national title. They qualified to the 1967 Copa Libertadores along with Emelec.
Qualified teams The number of teams expanded to sixteen. The qualified teams included the top-eight finishers from the Campeonato Interandino and the Campeonato de Guayaquil.
CompetitionTeamQualification methodGuayaquil8 berthsEmelec1966 Guayaquil championBarcelona1966 Guayaquil runner-up9 de Octubre1966 Guayaquil top-eight finishersAmérica de MantaEspañolNorte AméricaPatriaRiver Plate de MantaInterandino8 berthsLDU Quito1966 Interandino championAmérica de Quito1966 Interandino runner-upAmérica de Ambato1966 Interandino top-eight finishersAucasEl NacionalMacaráPolitécnicoUniversidad Católica
First stage
Sierra
Group A
Standings
Results
Group B
Standings
Results
Costa
Group A
Standings
Results
Group B
Standings
Results
Final stage
Standings
References