L. Gellért Kádár is a Hungarian actor from Transylvania. He grew up in the village of Zăbala, where his mother worked as a seamstress and his father served as the local bell ringer.

He attended Nagy Mózes Theoretical High School in Târgu Secuiesc from 2010 to 2014, then went on to study acting at the University of Arts in Târgu Mureș, graduating in 2019.

Following his studies, he spent five years as a member of the Tompa Miklós Company in Târgu Mureș, where he gained recognition for his stage work.