LITTLE ROCK, Ark .— Roy Scheider, the actor best known for his role as a police chief in the blockbuster movie “Jaws,” has died. He was 75.

Scheider died yesterday at the University of Arkansas for Medical Sciences hospital in Little Rock, hospital spokesman David Robinson said. The hospital did not release a cause of death.

However, a hospital spokeswoman, Leslie Taylor, said Scheider had been treated for multiple myeloma at the hospital’s Myeloma Institute for Research and Therapy for the past two years.

Scheider received two Oscar nominations, for best-supporting actor in 1971’s “The French Connection” in which he played the police partner of Oscar winner Gene Hackman, and for best-actor for 1979’s “All That Jazz,” the autobiographical Bob Fosse film. However, he was best known for his role in Steven Spielberg’s 1975 film, “Jaws,” the enduring classic about a killer shark terrorizing beachgoers and well as millions of moviegoers. Widely hailed as the film that launched the era of the Hollywood blockbuster, it was also the first movie to earn $100 million at the box office. Scheider starred with Richard Dreyfuss, who played an oceanographer.

In 2005, one of Scheider’s most famous lines in the movie — “You’re gonna need a bigger boat” — was voted no. 35 on the American Film Institute’s list of best quotes from American movies. That year, some 30 years after “Jaws” premiered, hundreds of movie buffs flocked to Martha’s Vineyard to celebrate the great white shark.

Scheider was also politically active. He participated in rallies protesting U.S. military action in Iraq.