Kellen Dunham (born June 18, 1993) is an American professional basketball player for the Indiana All-Americans of The Basketball League (TBL). He played college basketball for the Butler Bulldogs. At Pendleton Heights High School in Pendleton, Indiana, Dunham led the state of Indiana in scoring as a senior with 29.5 points per game and was named Herald Bulletin Player of the Year. Dunham committed to Butler on July 7, 2010, and was highly regarded by recruiting services. As a freshman, he was a 2012–13 Atlantic 10 All-Rookie Team selection. He scored 16.4 points per game as a sophomore and was named to the 2013–14 All-Big East Second-team. He was a 2014–15 All-Big East First-team selection as a junior.

Dunham was born on June 18, 1993, the son of Christy and Jim Dunham. He has three younger brothers: Kenton, Cole, and Jamison. Both his parents are basketball fans and raised their sons in a Christian household. Young Kellen learned to shoot on a "Little Tikes" hoop in the Dunham living room. He improved his game through constant practice in elementary school and middle school, to the consternation of some of his friends. When he was in eight grade, he worked on his jump shot with shooting coach Mark Baker, where Dunham learned how to shoot over his head.

Dunham attended Pendleton Heights High School, where he measured 5 feet 10 inches (1.78 m) as a freshman. Pendleton Heights head coach Brian Hahn described him as "gangly, skinny, and slow." In practices, he would shoot for 45 minutes after his teammates were finished. He shot up to 6 feet 4 inches (1.93 m) as a sophomore and averaged 17.0 points per game. He improved those numbers to 23.5 points per game as a junior, leading Pendleton Heights to a 20–6 record. As a junior, he scored 41 points against Fort Wayne Northrop High School.

In his senior season, Dunham averaged 29.5 points per game and shot 92.1% from the free throw line, leading the state of Indiana in both categories. He scored 45 points against Alexandria High School. Dunham was named Madison County Player of the Year as a senior after leading Pendleton Heights to a 23–3 record. His season came to an end after a 46–43 overtime loss against Terre Haute North High School in the Indiana High School Athletic Association Class 4A Regional at Hinkle Fieldhouse. Dunham was twice named All-State. Dunham finished third in Indiana Mr. Basketball voting, behind Gary Harris and Yogi Ferrell. He was named Herald Bulletin Player of the Year as a senior. He holds the record for the all-time leading scorer at Pendleton Heights with 1,899 points and led the Arabians to back-to-back sectional titles.

He signed a letter of intent with Butler on July 7, 2010. Rivals.com ranked him the 21st best shooting guard and 93rd best overall player. ESPN included Butler's 2012 recruiting class among its top recruiting classes from teams in non-BCS conferences, noting Dunham was listed as an ESPN Top 100 recruit and is "a sniper to run off screens and create movement in the halfcourt sets for the next four years." In ESPN's scouting report, Dunham was listed as the 78th best overall player, due in large part to the fact that what he "does really well is shoot the basketball. How he goes about his business is akin to a master craftsman applying his trade. Dunham is in constant motion, working to get himself in position to score and he's typically shot-ready." Rivals listed him as the best shooter among all recruits of non-BCS teams. Butler head coach Brad Stevens said, "the thing he brings is an incredible ability to put the ball through the net."

Coming into his freshman year on the 2012–13 team, Dunham was named to the Preseason All-Atlantic 10 Rookie Team. Dunham began practicing basketball drills late at night thanks to senior Rotnei Clarke, and the two became fast friends. In his first college basketball game, a win against Elon, Dunham came off the bench to score 18 points. He was named Atlantic 10 Rookie of the Week on November 12, 2012. During the 2012 Maui Invitational Tournament in 2012, Dunham had one of his best games as a freshman as Butler routed the then #9 team in the country, North Carolina, shooting 56% (5 of 9) from 3-point range and scoring 17 points. Dunham earned Atlantic 10 Rookie of the Week honors on December 10. On December 31, he again was named Atlantic 10 Rookie of the Week. In a game against #8 Gonzaga on January 19, 2013, that was featured on ESPN's College GameDay, he was the second leading scorer, shooting 4 of 8 from three-point range, behind 20 points and a buzzer-beating floater from Roosevelt Jones. Dunham earned his fourth Atlantic 10 Rookie of the Week honors on January 28. Butler went 27–9 on the season and reached the NCAA Tournament as a six seed. He finished the season averaging 9.5 points per game, fifth best on the team. Following the season, Dunham was named to the Atlantic 10 All-Rookie Team.

"Most guys are relaxed, but I look up and I see Kellen, and he's ... going 110 miles an hour," said 2013–14 Butler Bulldogs first year head coach Brandon Miller during an August overseas basketball tour. "Sprinting up and down the court. Shooting pull-ups. Going as hard and as fast as he possible can. He goes at a pace, whether its shootaround in Australia, 17 minutes into practice or two hours into practice, that never changes."

Dunham scored a career-high 32 points against Washington State in the Old Spice Classic, a tournament record. As a result, Dunham was named to the Old Spice Classic All-Tournament Team. Through the first nine games, Dunham averaged 18.7 points per game and shot 46 percent from 3-point range. He was named Big East Player of the Week on December 16 after contributing 25 points to lead Butler past the Purdue Boilermakers, 76–70 in the Crossroads Classic. Dunham had 30 points in a 99–94 double overtime loss to DePaul on January 9 and tied his career-best with six three-pointers, all of which came in the second half.