Carl Robert Boldt (October 22, 1932 – January 30, 2015) was an American college basketball player who was an integral member to the University of San Francisco's national championship team in 1955–56.

A 6'5" forward, Boldt started alongside future Hall of Famers Bill Russell and K. C. Jones as the Dons won their second-consecutive national championship with an unblemished 29–0 record.

[1] Boldt graduated from Verdugo Hills High School in Tujunga, California before enrolling at Glendale Community College in the fall of 1951.

"[3] The following season, Boldt's senior year in 1956–57, the USF squad had lost Russell, Jones and other key players due to graduation, so a third straight national championship seemed implausible.

Boldt then spent some time playing for the Buchan Bakers in the National Industrial Basketball League (NIBL), where in 1958–59 he was a Western Conference All-Star.

[7] He was also named the All-Star Game MVP after holding Dick Boushka, the NIBL's leading scorer, to only six points (all coming off free throws).