John Manchester Wieting (February 8, 1817 – February 13, 1888) was an American lecturer and philanthropist. He spent his early years as a teacher and then as an engineer and grader. After moving to Syracuse, New York, he read medicine to become a physician. After purchasing anatomical models he began giving lectures across upstate New York, gradually expanding the reach and the size of his lectures. They were extravagant affairs, and Wieting soon became known as one of the era's most prominent anatomical lecturers.