Given the greater propensity of married women to choose a childless li
festyle in recent decades, it is important to understand what contribu
tes to or deters this decision. This paper focuses on religious homoga
my as a possible predictor. Data from the Canadian Fertility Survey (C
FS) are used to examine the relationship between religious homogamy an
d voluntary childlessness in the context of several sociodemographic a
nd economic controls. The results indicate that non-Catholic wives in
homogamous marriages who attend church services frequently are less mo
tivated to control fertility, regardless of their sociodemographic bac
kground. It may be argued that, unless more attention is devoted in th
e literature to various dimensions of religion, little consensus on th
e effect of religious factors on childlessness can be expected.