After serving half of his 16-year sentence for sexually abusing three schoolgirls, the 79-year-old was released.
In 2015, the former rock star was sentenced to prison.
He was reportedly released from HMP The Verne, a low-security category C jail in Portland, Dorset, on Friday after serving an eight-year sentence. He is now subject to licence restrictions.
Glitter, who previously served at HMP Albany on the Isle of Wight, was automatically released halfway through a fixed-term determinate sentence, but he is now subject to licence conditions.
The former singer, whose real name is Paul Gadd, was at the pinnacle of his celebrity when he preyed on vulnerable victims who believed no one would believe their claims over those of a celebrity.
After inviting two girls, ages 12 and 13, backstage to his dressing room and isolating them from their mothers, the sex offender attacked them.
In 1975, his third victim was less than ten years old when he crept into her bed and attempted to rape her.
The allegations were made public 40 years later when Glitter became the first person to be arrested as part of Operation Yewtree, the Metropolitan Police investigation launched in the aftermath of the Jimmy Savile scandal.
