The relationship between intrinsic and personal extrinsic religious orientation as suggested by Gorsuch and McPherson is studied within four denominational samples of university students in four different cultural environments. Results show that intrinsic and extrinsic personal religious orientation form two separate dimensions only within the American Protestant sample. In three different European religious environments (one Eastern Orthodox, one Islamic, and one Roman Catholic), all extrinsic personal and intrinsic items can be combined into a single dimension. It is speculated that the intrinsic orientation may be culturally tied to Protestantism. Copyright © 2007 John Wiley & Sons, Ltd.