Four point Calvinism means that a person holds to four of the five points of Calvinism.  Often but not always, the point of contention for four point Calvinists is the doctrine of limited atonement.  These people instead accept the Arminian doctrine of unlimited atonement.

Some Calvinists argue that the five points of Calvinism are an "all or nothing" package and that one cannot pick and choose what they believe because each point is dependent upon the others.