Subordinationism is a heresy in Christian theology which holds that the Son and the Holy Spirit are subordinate to God the Father in nature and being. Subordinationism, in its various forms, was believed by some in the Early Christian period until the mid 4th century, when the Arian controversy was finally settled, after many decades of debates, with the formulation of the doctrine of Trinity.

Subordinationism is a heresy in Christian theology which holds that the Son and the Holy Spirit are subordinate to God the Father in nature and being. Subordinationism, in its various forms, was believed by some in the Early Christian period until the mid 4th century, when the Arian controversy was finally settled, after many decades of debates, with the formulation of the doctrine of Trinity.