Petar "Pera" Kralj (Serbian Cyrillic: Петар Краљ; 4 April 1941 – 10 November 2011) was a Serbian theater, film and television actor.
Kralj was born in Zagreb and was of Serbian origin from Banija. During World War II his family fled to Srem where he grew up. He graduated from Novi Sad Grammar School and studied acting at Belgrade University. He started his acting career at Atelje 212 theater. Petar Kralj had appeared on stage about 3,000 times, and starred in over 200 films, TV series and TV dramas gaining huge popularity as one of the most recognizable Serbian actors. In December 2000 he was ranked eighth in the Serbian newspaper Večernje novosti in the "Best Serbian Actors and Actresses of the 20th Century" list. In 2005 he played lead role in first Serbian science fiction television series The Collector.