Blake Ahearn (born May 27, 1984) is an American retired professional basketball player who last played for the Santa Cruz Warriors of the NBA Development League. He played college basketball for Missouri State.

Ahearn attended Immacolata School in St. Louis for grade school. He then went to De Smet Jesuit High School in St. Louis, Missouri. He played three years of varsity. He averaged 17.7 points per game as a junior and 18.5 as a senior. He was an All-Metro Selection his junior and senior years and an All-State selection his junior year. In his junior year he broke his hand in the divisional semifinal game. He was unable to play for the duration of his junior year. His team was state runner-up his junior year losing to Missouri powerhouse Vashon High School in the state championship game.

Ahearn played collegiately for the Missouri State Bears from 2003–2007. He was poised to finish his career with four straight NCAA free-throw titles but failed, and finished with an accuracy of 92.5% during his senior year. He finished his college career as a 94.6% free throw shooter, 435 for 460, all-time best percentage. He also holds a single-season record at 97.5%. He made 60 consecutive free-throws twice in his career (December 20, 2003 through February 14, 2004 and December 19, 2004 to February 26, 2005) which are school and Missouri Valley Conference records. He missed his final attempt against the San Diego State Aztecs in the NIT on March 24, 2007, his final college game. He holds the career record for career three-pointers at Missouri State with 276, and was selected the Missouri Valley Conference (MVC) Freshman of the Year (2004), also being a two-time all-MVC first teamer (2006 and 2007). He came within one game each season of making the NCAA tournament and failed to reach any. His team lost in double overtime to Northern Iowa in the MVC Tournament finals his freshman year and to Creighton in the MVC finals his sophomore year. His team was rated 21st in the RPI his junior year and a 33rd his senior year, which included a win over #7 in the nation Wisconsin.

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