His wife Kathryn Adams announced his death on his radio show on Wednesday. He had been suffering from lung cancer.
Best known as the host of the long-running talk radio programme The Rush Limbaugh Show, he was a towering figure in the conservative movement for years.
Three presidents appeared on his show, and he received the US Presidential Medal of Freedom in 2020.
But he was as controversial as he was influential, accused of voicing racist, sexist and homophobic views throughout his career.