Chris Rock's Divorce Is Final

Chris Rock is officially single, after paying a visit to a New Jersey courthouse ... TMZ has learned.

Chris and now ex-wife Malaak both appeared Monday before a judge, finalizing their divorce.

The couple married in 1996 and have 2 kids, ages 12 and 14.

As we reported, there's a third child ... and the circumstances of how she became part of the family are shrouded in mystery. 8-year-old Ntombi was only 6 months old when she began living with the Rock family. Ntombi is from South Africa and the daughter of poor street peddlers.

Ntombi was never adopted and Chris maintained she was not his daughter. He has been in regular contact with his 2 kids since the couple separated in 2014, but has not seen Ntombi.

We don't know the terms of the settlement ... the case is sealed. It's unclear what, if anything, Chris is paying by way of child support ... particularly in the case of Ntombi.

We made repeated calls to Chris' rep, Leslie Sloane, but the calls were not returned.