Eureka College is a private college in Eureka, Illinois, United States. Founded in 1855, it is related by covenant to the Christian Church (Disciples of Christ). The college enrolled approximately 559 students in 2023.

Eureka College was founded by abolitionists and was the third college in the United States to admit men and women on an equal basis. In 1856, future U.S. president Abraham Lincoln spoke on campus. Ronald Reagan, the 40th U.S. president, graduated from Eureka College in 1932 and maintained a close connection with the college throughout his life; it is home to the Ronald Reagan Museum and Peace Garden.