Arthur Cheney Train (6 September 1875 - 22 December 1945), also called Arthur Chesney Train, was an American lawyer and writer of legal thrillers, particularly known for his novels of courtroom intrigue and the creation of the fictional lawyer Mr. Ephraim Tutt. Train was born in Boston, Massachusetts. His father was lawyer Charles Russell Train, who served for many years as attorney general of Massachusetts, and his mother was Sara Maria Cheney. Train graduated with a BA from Harvard University in 1896 and LLB from Harvard Law School in 1899.