The Four Chaplains, also referred to as the Immortal Chaplains or the Dorchester Chaplains, were four chaplains who died rescuing civilian and military personnel as the American troop ship SS Dorchester sank on February 3, 1943, in what has been referred to as the second-worst sea disaster of World War II.

A military chaplain ministers to military personnel and, in most cases, their families and civilians working for the military. In some cases, they will also work with local civilians within a military area of operations.