The Platino Award for Best Actor in a Miniseries or TV series (Spanish: Mejor Interpretación Masculina en Miniserie o Teleserie) is one of the Platino Awards, Ibero-America's film awards presented annually by the Entidad de Gestión de Derechos de los Productores Audiovisuales (EGEDA) and Federación Iberoamericana de Productores Cinematográficos y Audiovisuales (FIPCA).

Until the 3rd edition of the awards, only film categories were awarded. In 2017, the category for Best Miniseries or TV series was introduced, being followed the next year by performance categories in television productions (male lead and female lead).

The category for Best Actor was first awarded in 2018 at the 5th Platino Awards with Argentine actor Julio Chávez being the first recipient of the award for his role as Abel Prat in El Maestro.

No actor has received the award more than once while Spanish actor Javier Cámara has the most nominations in the category with three, followed by Diego Boneta, Álvaro Morte with two each. The three actors are the only actors to be nominated more than once in the category.

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