Prince Harry -- Royal Person Plays Rugby With Normies

In an effort to prove he's just a regular, normal insanely wealthy guy ... Prince Harry hit up a youth rugby tournament in England this week -- and taught the sport to a bunch of starstruck boys and girls.

The 30-year-old -- who's also the Patron of England Rugby’s All Schools Programme -- played in a couple of games ... did a little coaching ... and hung out with some rugby pros who were also in attendance.

In unrelated news ... seems Prince Harry is on the prowl again.

The guy reportedly broke up with his girlfriend Cressida Bonas and was recently seen making out with a mystery blonde.