Caleb Sylvester Swanigan (born April 18, 1997) is an American professional basketball player for the Portland Trail Blazers of the National Basketball Association (NBA). He played college basketball for the Purdue Boilermakers. He was ranked among the top prep players in the national class of 2015 by Rivals.com, Scout.com and ESPN. He completed his senior season in the 2014–15 academic year for Homestead High School, who went on to win the first state championship in the school's history. Swanigan was named Indiana's Mr. Basketball and a McDonald's All-American.

Swanigan originally committed to Michigan State University, but later decommitted and committed to Purdue University. He was named Big Ten Freshman of the Week three times, a record at Purdue. He was also named to the Big Ten All-Freshman Team and also received a National Freshman of the Week award. Swanigan finished the season with 10.2 points per game and 8.3 rebounds per game.

During his sophomore year, Swanigan was named the Big Ten Player of the Year and first-team All-Big Ten, and was a unanimous first-team All-American. He was a finalist for the 2017 Karl Malone Award, given to the nation's top power forward. On June 22, 2017, he was selected 26th overall in the first round of the 2017 NBA draft by the Portland Trail Blazers.