The far rightâs relationship with religion has become a major focus of current research. Even in Western Europe, one of the most rapidly secularising areas of the world, far right actors claim to defend Christian values against the alleged threat of Islam and Muslim immigrants, a rhetorical strategy known as âChristianismâ. Yet, little is known about how religiosity, Islamophobia, and populist far-right ideology are connected at the level of mass belief systems in Western Europe. Most of the literature is focused either on religiosityâs effect on voting or on the connection between religiosity and ethnic prejudice, without considering religiosityâs relationships with the wider spectrum of far-right ideology. The present article fills this gap by analysing survey data from Britain, France, Germany, and the Netherlands. It uses SEM to uncover the relationships between Christian religiosity on the one hand and Islamophobia and far-right attitudes on the other. The results are broadly similar across different contexts: religiosity is mostly unrelated to Islamophobia, nativism, right-wing authoritarianism, and populism. Conversely, Islamophobia overlaps considerably with both nativism and authoritarianism: people who perceive immigration as a threat and favour strict laws and harsh enforcement also tend to reject Islam, but not for religious reasons. This pattern is compatible with the strategy of Christianism, which is largely devoid of religiosity, yet facilitates the âotheringâ of Muslims as a cultural out-group. It also helps to explain why there is no genuine, electorally relevant religious far right in Western Europe.