Theodore Roosevelt "T. R." Dunn (born February 1, 1955 in Birmingham, Alabama) is an American former professional Basketball player and coach.
A star at the University of Alabama, the 6'4" Dunn was selected by the Portland Trail Blazers in the second round of the 1977 National Basketball Association Draft. He went on to have a productive 14-year career with three teams: the Blazers (1977–1980), the Denver Nuggets (1980–1988;1989–1991), and the Phoenix Suns (1988–1989). Dunn was named to the NBA's All-Defensive Second Team three times during his career, and he was widely regarded as one of the best Rebounding Guard (basketball) of the 1980s .
After retiring in 1991 with 5,033 career points and 4,371 career rebounds, Dunn served six seasons (1991–1997) as an assistant coach for the Charlotte Hornets. He later served brief tenures as head coach of the WNBA's Charlotte Sting and as an assistant coach at the University of Alabama, and in 2004 he was hired as an assistant coach for the NBA's Sacramento Kings. In 2007 he became an assistant coach for the Houston Rockets.