Diddy -- RICK ROSS SHOULD BUY THE DOLPHINS ... Lemme Know If I Can Help!

Diddy is no dummy ... so when he told us last night that he thinks it's a "great idea" for Rick Ross to buy a piece of the Miami Dolphins, The Boss should probably do it.

Earlier this week, Rick revealed that he sat down with Dolphins big wigs and talked about owning a piece of the NFL team

"It was a real positive conversation," Ross said.

So when we asked Diddy how he felt about it, the hip hop mogul not only gave his blessing ... but asked how he could help make it happen.

BTW -- Diddy doesn't own a team himself, but has stated in the past that he wants to own a MAJORITY stake in an NFL franchise in the future.

He's reportedly worth $580 million ... so it ain't exactly out of the picture.