Jeffery D. Long (born 1969) is a religious studies scholar who works on the religions and philosophies of India, particularly Hinduism and Jainism. He is a professor of religion and Asian studies at Elizabethtown College.

Long graduated with a BA from the University of Notre Dame in 1991.^[1] During his time at Notre Dame, he converted from Catholicism to Hinduism, as later informed his work.^[2] He received his MA and PhD at the University of Chicago Divinity School in 1993 and 2000, respectively.^[1] His PhD thesis was titled Plurality and Relativity: Whitehead, Jainism, and the Reconstruction of Religious Pluralism.^[3] He began work at Elizabethtown College in 2000.^[4]

Long has authored four books on Hinduism and Jainism. He was a consultant to the Hindu American Foundation during its lawsuit against the California Board of Education.^[5][6]

• Long, Jeffery D. (January 23, 2007). A Vision for Hinduism: Beyond Hindu Nationalism. I.B.Tauris. ISBN 9781845112738 – via Google Books.
• Long, Jeffery D. (2009). Jainism: An Introduction. I.B. Tauris. ISBN 978-1-4416-3839-7. OCLC 608555139.^[7]
• Long, Jeffery D. (September 9, 2011). Historical Dictionary of Hinduism. Scarecrow Press. ISBN 978-0-8108-7960-7.
• Long, Jeffery D. (2020). Hinduism in America: A Convergence of Worlds. Bloomsbury Publishing. ISBN 978-1-4742-4845-7. OCLC 1159617533.