Mase says people keep hitting him up, asking him if he’s going to make an appearance in the gallery at the upcoming Diddy criminal trial … and he’s seemingly putting the decision up to his fans.

The rapper revealed on his “It Is What It Is” podcast with Cam’Ron that he keeps getting asked about going to support Diddy in court … and he’s asking fans to vote on whether he should go or not.

Mase and Diddy go way back … with Mase releasing his debut album “Harlem World” in 1997 on Diddy’s label, Bad Boy Records.

Diddy had features on three songs on “Harlem World” … and they also collab’d on other hits over the years like “Mo Money Mo Problems” with The Notorious B.I.G. and “Can’t Hold Me Down.”

Other songs featuring Mase and Diddy include the “Only You” remix by 112 and “Been Around the World.”

Jury selection in Diddy’s criminal trial begins Monday and opening statements are expected the following week … and it’s all going down in a Manhattan courtroom, so we gotta ask …