Glenn McDonald (born March 18, 1952) is an American retired professional basketball player. He played three seasons for the Boston Celtics and the Milwaukee Bucks before going overseas most notably in the Philippines, with the U/Tex Wranglers in the early-80's. He averaged 4.2 points in 146 games played in his NBA career. He played a huge role in Game 5 of the 1976 NBA Finals, scoring eight points in the third overtime period as the Celtics won 128-126 before eventually winning the championship in six games. In the Philippines, McDonald was instrumental in U/Tex's 1980 PBA Open Conference championship against Toyota Tamaraws. He scored two free-throws to send the fifth game into overtime after Toyota led by four with 16 seconds left in regulation. U/Tex eventually won the championship, 99-98. In 1981, he became the head coach of the U/Tex franchise. McDonald was also the Long Beach State 49ers' head coach in the early 1990s and was an assistant coach for the Los Angeles Sparks of the WNBA.