The Luna Award for Best Supporting Actor is an award presented annually by the Film Academy of the Philippines (FAP). It has been awarded since the 1st Luna Awards to actors who have delivered outstanding performance in a supporting role.
In 1981, the Executive Order 640-A signed by President Ferdinand Marcos mandated the Film Academy of the Philippines to recognize excellence in Philippine filmmaking annually. However, due to recurring financial difficulties, the Luna Awards were not held in certain years or were sometimes postponed to a later date.
LA Santos currently holds this title for his role in In His Mother's Eyes. Meanwhile, Ronaldo Valdez has the record for most wins in this category with three awards.
The winner is shown first, followed by the other nominees.
The following individuals have won two or more Luna Awards for Best Supporting Actor:
<sup>*The 27th and 29th Luna Awards were held on the same day due to financial difficulties.</sup>