Jaren Walter Jackson Jr., nicknamed "the Block Panther", also known by his initials JJJ, is an American professional basketball player for the Memphis Grizzlies of the National Basketball Association (NBA). He was selected by Memphis with the fourth overall pick of the 2018 NBA draft. In 2023, he was named to his first NBA All-Star team, later winning Defensive Player of the Year that same season. Jackson has led the league in blocks per game in two consecutive seasons. He played college basketball for the Michigan State Spartans.

The Memphis Grizzlies are an American professional basketball team based in Memphis, Tennessee. The Grizzlies compete in the National Basketball Association (NBA) as a member of the Southwest Division of the Western Conference. The Grizzlies play their home games at FedExForum. The Grizzlies are currently the only team in the major professional North American sports leagues based in the city of Memphis, and the only professional basketball team in the state of Tennessee.