Black Donald Sterling -- He Ruined the Name for Both of Us!

This is like that Ronald McDonald commercial for Taco Bell ... if Ronald McDonald hated black people.

TMZ has tracked down Donald Sterling ... not the racist Los Angeles Clippers owner ... but a 29-year-old guy who runs a production company in Forest Hills, Texas. He's a Miami Heat fan, so there's no conflict of interest there.

Donald tells TMZ ... he's been going by DJ lately, because so many people have been giving him a hard time. He says most of the teasing has come from friends and family, but he's being super careful about using his full name in public.

DJ (we got your back, man) tells TMZ he thinks Sterling's views are unacceptable and pitiful in this day and age ... and Sterling should be forced to change his name so DJ can have his good name back.

This would be fun ... V. Stiviano should take a pic with DJ and post it on her Instagram.