Christopher Plummer has died aged 91, according to his manager.
The Sound Of Music star died at home on Friday in Connecticut, in the US.
The actor enjoyed a varied career across film, television and theatre and in 2012 became the oldest actor to win an Oscar.
He was handed the best supporting actor gong for his part in Beginners.
The official Twitter account for The Oscars shared a tribute to Plummer.
“Christopher Plummer beguiled audiences across generations in memorable roles from Captain von Trapp in The Sound of Music to Harlan Thrombey in Knives Out,” a statement said.
“He worked steadily for 60+ years, winning a Best Supporting Actor Oscar in 2012 for Beginners. He will be missed.”
Lord Of The Rings actor Elijah Wood tweeted: “So sad to hear that Christopher Plummer has passed. What a legend.”
So sad to hear that Christopher Plummer has passed. What a legend.— Elijah Wood (@elijahwood) February 5, 2021
Star Trek star George Takei labelled Plummer a “giant of stage and screen”.
In a tweet, he added: “Rest in eternal music, Captain Von Trapp.”
Inception actor Joseph Gordon-Levitt tweeted: “Christopher Plummer… one of the greats.”
Netflix described Plummer as “a master of the craft whose films will live on forever”.
“Christopher Plummer brought warmth, humanity, and complexity to every performance throughout his extensive career,” a tweet from the streaming giant added.
Christopher Plummer brought warmth, humanity, and complexity to every performance throughout his extensive career. Rest in peace to a master of the craft whose films will live on forever. pic.twitter.com/xVdFFjh4aQ— NetflixFilm (@NetflixFilm) February 5, 2021
Plummer continued to star in major films well into later life and in 2019 featured in Knives Out alongside James Bond actor Daniel Craig.
However Plummer, who also starred on Broadway and in Royal Shakespeare Company productions, is perhaps best known for playing Captain Georg von Trapp in 1965 film The Sound Of Music.
In 2017 it was announced the Canadian actor would replace Kevin Spacey in All The Money In The World after allegations of sexual misconduct emerged against Spacey.
The following year he was nominated for another Oscar for his role, after being enlisted at the 11th hour, as frugal billionaire J Paul Getty in Sir Ridley Scott’s film.