Snoop Lion just got the MARLEY FAMILY SEAL OF APPROVAL ... because Bob's son Rohan tells TMZ the reggae legend would've totally supported Snoop's Rastafarian rebirth.
Rohan says he's well aware that an original member of the Wailers -- along with the Rastafari Millennium Council -- attacked Snoop ... claiming the rapper is nothing more than a Rasta Imposta.
But Rohan says those guys have it all wrong -- telling us, "Our father's name should not even be mentioned in this issue because like a true Rasta, he would have embraced Snoop's reincarnation and welcomed the positivity."
He continues, "Why condemn a man for his love of Rastafari and Bob Marley?"
"We have been cool with Snoop before his transformation and he will continue to have our blessings and support."