Hi Badboy, According to the Calvinist, there are five tenants of the Christian faith: 1. Total Inability-Sin had extended to every part of man's personality-his thinking, emotions, and will. The ungenerate man is dead in his sins. (Witness theology supports this idea). 2. Unconditional Election-God has elected, based solely on the counsel of his own action, some for glory and others for damnation before the founding of the world (this is commonly known as predestination, and is not supported in Witness theology). 3. Limited atonement-Christ died for those whom God gave him to save. Christ died for the specific sins of specific sinners (ie-the predestined), and to make the holy church. (Witnesses do say that Christ died for 'men of good will' and not the entire world, but do not claim there is any chosen number). 4. Irresistable Grace- Men come to Christian salvation when the Father calls them via the holy spirit and evangelizing. (This could be supported by witness theology, except according to Calvin, these men were foreordained by God to recieve this invitation). 5. Perseverence of the Saints-The saints will remain in God's hold until thaty are glorified and brought to abide with him in heaven (in other words, once saved, always saved. Witnesses say that even the 144,000 can lose their standind with God). Add to that the fact that Witnesses are actually latter day arianists (they believe that Christ is not of the same substance of the Father, not coequal or co-eternal), of which Calvin vehementally was against, I would say no, their theology is not Calvinistically based.