A federal judge has set Jan. 17, 2020, as the sentencing date for the founder of the Nxivm cult, who was convicted for his role in running a secret society in which women were turned into his sex slaves and branded with his initials.

Keith Raniere, 59, faces a mandatory minimum sentence of 15 years in prison — though could face a life sentence — for his June convictions on racketeering, sex trafficking and other charges.

Raniere is one of three Nxivm members who are set to be sentenced in January before Brooklyn federal Judge Nicholas Garaufis.

The US Attorney’s Office in Brooklyn declined to comment on the sentencing date. Raniere’s attorney did not immediately respond to a request for comment.

Clare Bronfman, an heiress to the Seagram’s liquor fortune and Nxivm’s financier, pleaded guilty to concealing and harboring an illegal immigrant for financial gain. She faces up to 25 years in prison when she is sentenced on Jan. 8, though under federal sentencing guidelines her sentence will likely hew closer to a term ranging between 21 and 26 months.

Kathy Russell, Nxivm’s bookkeeper, will be sentenced on Jan. 29. She could receive up to a decade in prison, but may receive six months to a year under sentencing guidelines.

Raniere co-founded Nxivm in the 1990s as a self-help organization. But in 2015, he formed DOS, a secret society within the group intended to exalt Raniere’s teachings and to provide him with sex slaves.