The 1989 PBA Fiesta All-Filipino Conference finals was the best-of-7 series basketball championship of the 1989 PBA All-Filipino Conference, and the conclusion of the conference's playoffs. The San Miguel Beermen and Purefoods Hotdogs played for the 43rd championship contested by the league. This is the first All-Filipino finals series that will be competed in a best-of-seven format.
San Miguel Beermen won their first All-Filipino crown and seventh PBA title with a 4–2 series victory against the Purefoods Hotdogs. The Beermen had won five of the last six conferences and are now getting close towards their bid for a possible grandslam.
