The Goya Award for Best Supporting Actor (Spanish: Premio Goya a la mejor interpretación masculina de reparto) is an award presented annually by the Academy of Cinematographic Arts and Sciences of Spain. It is given in honor of an actor who has delivered an outstanding supporting performance in a film.

Miguel Rellán was the first winner of this category for his performance as Alberto Goicoechea in Dear Nanny.

Actors Juan Diego, Eduard Fernández, Karra Elejalde, Emilio Gutiérrez Caba and Luis Zahera hold the record for most wins in this category with two victories each. Antonio de la Torre has received the most nominations for this award with seven, followed by Juan Diego and Eduard Fernández, both with six each, and Juan Echanove with five.

Actors that won or were nominated for this category have appeared in film festivals such as the San Sebastián International Film Festival, where Javier Bardem (Running Out of Time) and Javier Cámara (Truman) have received the Silver Shell for Best Actor. Luis Zahera and Diego Anido shared the Silver Hugo for Best Ensemble Performance at the Chicago International Film Festival with the rest of the cast of The Beasts.

As of the 2025 ceremony, Salva Reina is the most recent winner in this category for her role as Felipín in The 47.

In the list below the winner of the award for each year is shown first, followed by the other nominees.