The 1991 Philippine Basketball Association (PBA) All-Filipino Conference was the second conference of the 1991 PBA season.
It started on June 9 and ended on September 1, 1991.
The tournament is an All-Filipino format, which doesn't require an import or a pure-foreign player for each team.
The following format will be observed for the duration of the conference: Group A: Group B:
1990 1990