Michael Jordan and Tony Romo bro'd down on Wednesday -- getting in a round of golf together at a swanky course in Mexico.
TMZ Sports has learned ... the NBA's GOAT and the former Dallas Cowboys superstar hit up El Camaleón Mayakoba Golf Course in Playa del Carmen -- and looked quite chummy while hitting it around.
In video of one of the holes they played, you can see the guys were chattin' on the green while their partners tried to sink putts.
Jordan smoked a cigar, while Romo had a big smile on his face.