Claremont School of Theology (CST) is a graduate school located in Claremont, California, offering Master of Art, Masters of Divinity, Doctorate of Ministry and Ph.D. degrees in religion and theology.

CST is a transdenominational theological school and a founding member of a new multireligious consortium Claremont Lincoln University that's embarking on a bold 21st century experiment.

An affiliate member of the Claremont Colleges, it has a relationship with Claremont Graduate University which allows the two schools to share faculty members, library resources, cultural events, and joint academic research endeavors.

Originally founded as the Maclay School of Theology in San Fernando, California in 1885, the Methodist seminary was founded by Charles Maclay, founder of the town of San Fernando, former Methodist minister and State Senator. The school became affiliated with the University of Southern California from 1900 to 1957, staying on the USC campus until it moved to its present location in Claremont. The school is one of thirteen seminaries affiliated with the United Methodist Church, though usually more than forty different denominations are represented in the student body in any given school term.

In a 2008 meeting, the Board of Trustees set in motion the Claremont University Project by approving the following mission statement: As an ecumenical and inter-religious institution, Claremont School of Theology seeks to instill students with the ethical integrity, religious intelligence, and intercultural understanding necessary to become effective in thought and action as leaders in the increasingly diverse, multireligious world of the 21st century. On May 16, 2011, the University Project was officially named Claremont Lincoln University.

CST is home to the Ancient Biblical Manuscript Center (ABMC), a research center devoted to the documentary history of Judaism and Christianity. It also houses the Center for Process Studies (CPS), a joint faculty center of Claremont School of Theology and the Claremont Graduate University. The CPS promotes a "relational approach" found in process thought, specifically process theology. CST also has a strong representation of students and faculty from all along the Pacific Rim. It houses the Center for Pacific and Asian-American Ministries (CPAAM), which provides ministerial education and other services to enhance ministry to Pacific and Asian American constituencies of all denominations.

Among the non-Methodist institutions sharing the CST campus are the Episcopal Theological School at Claremont and the Disciples Seminary Foundation.