Larry Costello

Lawrence Ronald "Larry" Costello (July 2, 1931 – December 13, 2001) was an American professional basketball player and coach. Born in Minoa, Onondaga County, New York, to Hubert and Ethel Costello—both accomplished basketball players in their own right—he was known as Ronnie in his youth.

As a player, Costello competed for the Philadelphia Warriors and the Syracuse Nationals/Philadelphia 76ers of the NBA, as well as the Wilkes-Barre Barons of the EPBL. A six-time All-Star, he was one of the NBA's last two-handed set shooters.

Costello later became a head coach, leading the Milwaukee Bucks and the Chicago Bulls. As the inaugural coach of the Bucks, he guided the franchise to a championship in 1971, its third season of existence—the fastest run to a title for an expansion team in NBA history. Over ten seasons as a coach, he reached the postseason six times and won 37 of his 60 postseason games, a winning percentage of 61.7 percent, the tenth best in NBA history through the 2024–25 season.

In 2022, Costello was inducted into the Naismith Basketball Hall of Fame as a contributor.