Los Angeles, California – Actor Walter Koenig, who made a name for himself on the iconic sci-fi series Star Trek, has died at the age of 90.

According to TMZ, citing Koenig's agency, Galactic Productions, the actor died of natural causes at his home in North Hollywood.

A spokesperson said Koenig's daughter Danielle and his niece were by his side when he peacefully passed away on Sunday.

Born in Chicago in 1936, the actor began his career in the early 1960s, appearing in smaller series such as Gidget and I Spy before landing the role of Ensign Pavel Chekov, whom he portrayed in 36 episodes of Star Trek.

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He later reprised the role in Star Trek: The Motion Picture, Star Trek II: The Wrath of Khan, Star Trek III: The Search for Spock, and several other sequels.

Koenig's other TV credits include Babylon 5, Columbo, and Futurama. The actor was also honored with a star on the Hollywood Walk of Fame.

"Thank you, Walter, for the memories, the inspiration, and for boldly going where few have gone before," the agency spokesperson wrote in a statement, extending condolences to Koenig's family and fans.

Koenig once again demonstrated his acting talent with his recent win at the 2026 Independent Shorts Awards for his performance in the film Mr. Fleischmann.

At fan conventions, the spokesperson said, Walter "shared his kindness, wit, and appreciation with everyone fortunate enough to meet him. He understood what Star Trek meant to people and embraced the community that grew around it."