Heavy D Funeral To Be Private

We're told Heavy's family has organized a public viewing on Thursday -- and anyone who wants to pay tribute to the hip hop legend is encouraged to show up.

But the following day, the burial service is V.I.P. only -- and the invite list only includes close members of Heavy's family and dear friends, such as Diddy, Mary J. Blige, a few of the Wayans brothers ... and others.

We're told Eddie F and G-Whiz -- former members of Heavy D and the Boyz -- are also on the invite list.