In Argentina, ninety percent of the population are Roman Catholic by cultural bonds, two percent are Protestant, and another two percent are Jewish. There is also a rise in the Evangelical movement in Argentina. Although Jews only account for two percent of Argentina's population, Buenos Aires has the second largest Jewish population in the Americas. Even though most Argentines are Catholic, only twenty percent of them attend church on a regular basis or align to catholic mandates. They mostly attend church for weddings, funerals, and major religious feasts. Most Argentines do not strictly adhere to Catholicism. There are a lot of Andean pagan ceremonies incorporated into the religious festivals.

Aside from traditional religious practices, there are also some unconventional practices that take place in Argentina. One of the most famous practices is that of the cult of La Difunta Correa which is named after Deolinda Correa . La Difunta means "the deceased". Deolinda Correa's husband fought in the civil war in 1840. Correa along with her infant son followed her husband's battalion. While in San Juan, Correa suffered from starvation and thirst, and eventually died as a result. A group of soldiers found her body a few days after she died. There they found her son still alive and nursing from Correa's breast. To Argentines, this was a miracle, and because of this they have made many shrines in her name in Vallecito , where she is buried. Some Argentines believe that Deolinda Correa has super natural powers and attribute a lot of their succeses and happiness to her power. Each year many Argentines make a pilgrimage to her grave. During the pilgrimage, they present gifts and plastic bottles of water to thank Correa for miracles that they believe she granted. Most people leave their most valuable and personal possessions at the shrine as gifts.