Moïse Amyraut, in English texts often Moses Amyraut, was a French Huguenot, Reformed theologian and metaphysician. He was the architect of Amyraldism, a Calvinist doctrine that made modifications to Calvinist theology regarding the nature of Christ's atonement and covenant theology.

Amyraldism is a Calvinist doctrine. It is also known as the School of Saumur, post redemptionism, moderate Calvinism, or hypothetical universalism. It is one of several hypothetical universalist systems.