Bill Cosby tweeted Sunday thanking Hyman.
From 1984 to 1992, Hyman played the father of obstetrician Cliff Huxtable and offered sage advice to his five grandchildren.
Hyman's nephew Rick Ferguson told The Hollywood Reporter the actor died at the Lillian Booth Actors Home in Englewood, N.J.
His cause of death was not given in the report.
He had prominent roles in TV versions of "Macbeth" (1968), "Julius Caesar" (1979) and "Coriolanus" (1979), and from 1985-1989 was the voice of Panthro on "Thundercats".
Earle Hyman, a veteran actor of stage and screen who was widely known for playing Russell Huxtable on The Cosby Show, has died.
Hyman was born in October 11, 1926, in Rocky Mount, North Carolina. "But just the fact that people still ask that question - should we or shouldn't we? - proves that things have not come a long way".
"The first play I ever saw was a present from my parents on my 13th birthday - Nazimova in "Ghosts" at Brighton Beach on the subway circuit - and I just freaked out", Hyman said, during an interview in 2000. He made his Broadway debut in 1943 in Run, Little Chillun before having a two-year run as Rudolf in Anna Lucasta.
Hyman enjoyed an global theater career that spanned decades. He received a 1986 Emmy nomination for outstanding guest performer in a comedy series for his work on the Cosby episode "Happy Anniversary".