The 1989 Philippine Basketball Association (PBA) Reinforced Conference was the third and last conference of the 1989 PBA season.
It started on October 1 and ended on December 12, 1989.
The tournament is an import-laden format, which requires each team to have an import standing 6 feet 1 inch.
The following format will be observed for the duration of the conference: 1988 1988