Sacramentalism is the idea that certain rites/rituals/ceremonies of the church are the means by which God confers grace on people. In many churches there are two such sacraments - Baptism and the Lord's Supper. Catholics and Episcopalians have additional sacraments.
We at BibleTruthForToday do NOT believe that God's grace is conferred to man by way of man's observing, or participating in, various sacraments. We believe that baptism is an outward demonstration to show (in obedience to God) what has already transpired in the heart of the person and that the "Lord's supper" is a remembrance of what God has done in Jesus Christ's sacrifice, but that neither of these are any special means by which the grace of God is received by men. The very nature of that Passover meal, which came to be called the "Lord's Supper", was a memorial type of observance - remembering the "Passover" as recorded in Exodus - there was no sacramental, mystical, or other significance to it - it was just to make sure Israel remembered the great deliverance that God provided and that the blood of the lamb was the key to preventing the Angel of Death from taking the first-born of each of Israel's families. The same principle applies to the church regarding the Lord's Supper.
Churches that practice sacramentalism
Orthodox Presbyterian Churches
Reformed Churches (not all)
Roman Catholic Churches