Bandmates Billy Gibbons and Frank Beard said that Hill died in his sleep at his home in Houston, Texas. They did not give further details.
Earlier in July, ZZ Top had announced that Hill would not play some upcoming shows due to a hip injury.
Known for his bushy beard and sunglasses, Hill played with ZZ Top for over 50 years.
"We, along with legions of ZZ Top fans around the world, will miss your steadfast presence, your good nature, and enduring commitment to providing that monumental bottom to the 'Top'," the statement from Gibbons and Beard said.
