http://www.puertovallarta.net/fast_facts/religion.php

Christian:
 
Our Lady of Guadalupe Parish (Parroquia de Ntra. Sra. de Guadalupe)
 (Spanish Only)
Calle Hidalgo 370, Puerto Vallarta
Tel: (322) 222-1326
http://parroquiadeguadalupevallarta.com

Also a landmark worth visiting for the architecture.

Mass schedule
Monday to Friday: 7:30, 12:00, 19:00, 20:00
Saturday 7:30, 12:00, 17:00 (English)), 18:00, 19:30, 20:30
Sunday 6:30, 8:00, 10:00 (English & Spanish), 12:00, 18:30, 19:30, 20:30

Paradise Church PV 
(Interdenominational, English Speaking)
Isurgentes 330, Insurgentes 330, Puerto Vallarta
http://www.paradisechurchpv.org

Mosques:
There are no Mosques (masjid) or halal restaurants in Puerto Vallarta.

Synagogues:
While there are no synagogues in Puerto Vallarta, there is a local resource in Mel Borstein.  Drop him an e-mail at melbornstein@hotmail.com. He'll be glad to answer any questions and let visitors know if there are any Jewish events that happen to coincide with their visit.