
Pääru Oja (born May 16, 1989) is an Estonian stage, film, voice, and television actor.
Pääru Oja was born in Tallinn, the youngest of two sons. His father is actor Tõnu Oja and his older brother is Estonian Theatre Festival CEO and theatre manager Kaarel Oja, who is married to actress Ursula Ratasepp. His uncle is actor, director and theatre instructor Rein Oja. He attended primary and secondary schools in Tallinn before being accepted to the Estonian Academy of Music and Theatre in Tallinn, where he graduated from in 2012 under course supervisor Elmo Nüganen. Oja's diploma roles included Father of Toulon in Peter Barnes' Red Noses (2010), Joseph Wykowski in Neil Simon's Biloxi Blues, and Argante in Molière's The Imaginary Invalid (2011). Among his graduating classmates were: Henrik Kalmet, Karl-Andreas Kalmet, Priit Pius, Märt Pius, Liis Lass, Piret Krumm, Maiken Schmidt, and Kaspar Velberg.

Sisu: Road to Revenge
2025 · as Militsioner

Vinski 2
2026

The Kidnapping of a President
2026 · as Colonel Viklund

Our Erika
2026 · as Jaanus Kuum

Dawn of War
2020 · as Peeter Parik

The Shadow
2024 · as Juhan Liiv

1944
2015 · as Medic Elmar Säinas

One-Dimensional Man
2025 · as Bandit

Helene
2020 · as Priest

Sad Inheritance
2024 · as Erik

Säde
2017 · as Tristan

Hit Big
2022 · as Ninja

Between Covers
2018 · as Ott

The Spy and The Poet
2016 · as Siim

The Last Ones
2020 · as Rupi

Kid Detectives and the Secret of the White Lady
2013 · as Evaristus

Mihkel
2018 · as Mihkel

The Riddle of Jaan Niemand
2018 · as Tiidrik