Jeremiah Chaplin (January 2, 1776 – May 7, 1841) was a Reformed Baptist theologian who served as the first president of Colby College (then called the Waterville College) in Maine. Chaplin was born in Rowley, Massachusetts (now Georgetown, Massachusetts) in 1776 to a Baptist family. He attended Brown University, a school with an historical Baptist affiliation, graduating in 1799 with a Bachelor of Arts. Chaplin spent a year at Brown as a tutor and pursued additional theological study to become a minister. To this end, he studied under Thomas Baldwin of the Second Baptist Church in Boston.