The centre point for various major faiths in the University is the Mansfield building, home to the Chaplaincy. More information can be found from here: http://www.st-andrews.ac.uk/chaplaincy/ 
A list of other places of worship in the town can be found here: http://www.standrewsdirectory.com/category/churches.html
Further information about our Equality and Diversity approach to Religion and Belief can be found here: http://www.st-andrews.ac.uk/hr/edi/religionBelief/