Bill Cosby -- TWO Networks Vow ... We're Not Cancelling Reruns

TV Land may have canned Bill Cosby's classic show from its schedule ... but 2 other networks are standing firm behind the comedian -- and there's a big demographic difference.

Centric -- which frequently airs marathons of "The Cosby Show" -- vows the network will continue to air reruns.

Same goes for ASPiRE ... which claims to be "closely monitoring the situation" -- but they're not taking reruns of his other sitcom "The Bill Cosby Show" off the schedule.

Both networks market themselves as targeting African Americans -- so it looks like they believe their demo hasn't turned its back ... at least yet.

This is the first good news Cosby's heard all month.