The "Daydream Believer" singer passed away at Martin Memorial Hospital in Florida on Wednesday after suffering a heart attack, according to TMZ.
The Britain-born star began his career as a child actor on the long-running U.K. soap opera "Coronation Street" before finding fame in the 1960s as a member of the Monkees, a group formed to star in a TV series of the same name.
The band split in 1971, and Jones went on to established himself as a solo star. He also joined forces with fellow Monkee Micky Dolenz to form their own group, Dolenz, Jones, Boyce & Hart, with songwriters Tommy Boyce and Bobby Hart.
The Monkees reunited for a troubled tour in 2001. Another reunion, for their 45th anniversary trek last year, also ended abruptly when they canceled the second half of the tour without explanation.
Jones last hit the stage on Feb. 19 for a solo show in Oklahoma.