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| Dates | August 21 – September 4, 1990 | |||||||||
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| Television | Vintage Sports (PTV) | |||||||||
| Radio network | DZAM | |||||||||
The 1990 PBA All Filipino Conference finals was the best-of-7 basketball championship series of the 1990 PBA All-Filipino Conference, and the conclusion of the conference's playoffs. The Presto Tivolis and Purefoods Hotdogs played for the 46th championship contested by the league.
The Presto Tivolis wins their 6th PBA title and its fourth All-Filipino crown with a 4–3 series victory against Purefoods Hotdogs, which failed to win the prestigious All-Filipino plum for the third straight year, their finals series marked only the third time the championship went into a full route of seven games.