Michael Dwayne Weaver (born June 13, 1951) is an American former professional boxer who competed from 1972 to 2000, and held the WBA heavyweight title from 1980 to 1982.

In late 1978 Weaver got a new team and manager and reeled off five straight knockouts, two of which came over top ranked opponents.

These wins helped get him a high-profile world title fight against undefeated WBC champion Larry Holmes in New York's Madison Square Garden in June 1979.

Press pictures showed Tate sound asleep whilst Weaver did a handstand alongside to celebrate.

In October 1980 Weaver made his first defense, traveling to Sun City, South Africa, to fight Gerrie Coetzee.

In 1981 Weaver outpointed the spoiler James "Quick" Tillis over 15 rounds in Chicago to retain his title after a year's inactivity.

After another year's inactivity, Weaver took on highly regarded Michael Dokes in Las Vegas, December 10, 1982.

On the morning of the fight, Nevada State Athletic Commission officials warned all officials participating in the card to protect the health of the boxers in order to avoid another potential fight-related fatality, which Curtis responded, "Everybody has Duk Koo Kim in the back of his mind," referring to the November 13 fight, as Dr. Lonnie Hammargren, a doctor who had performed brain surgery in a futile attempt to save Kim, attended the meeting.

This would be Weaver's last title challenge although a notable 2nd-round KO of Carl "The Truth" Williams a skilled boxer would follow the defeat to Thomas.