ラテン語のpagus, 村, 村人, PIE*pag, 固定する, 印をつける, が語源で、語源的にはpage, pactと同じ。 後世の語源はvillagerから低俗な, キリスト教徒でない, 異教徒。語義の進化はvillage,villageと比較される。
Pagan and heathen are primarily the same in meaning; but pagan is sometimes distinctively applied to those nations that, although worshiping false gods, are more cultivated, as the Greeks and Romans, and heathen to uncivilized idolaters, as the tribes of Africa. A Mohammedan is not counted a pagan much less a heathen. [Century Dictionary, 1902]The English surname Paine, Payne, etc., appears by old records to be from Latin paganus, but whether in the sense "villager," "rustic," or "heathen" is disputed. It also was a common Christian name in 13c., "and was, no doubt, given without any thought of its meaning" ["Dictionary of English Surnames"].