Roman Catholicism makes up a large percentage of the religions practiced in Spain. However, many do not practice religious worship or attend church.
Spain is 94% Roman Catholic. All the other religions only total 6%.    
   
Spain.
70% of Spain is Roman Catholic, 2% other religions,25% no religion. Roman Catholocism is a denomination of Christianity
The main religion of Spain is Catholicism.Well, the main religion in Spain is Catholicism. 94% of the population is Catholic, but they do have other religions there too.
About 75% of Spain is Roman Catholic. About 20% say they are atheists or non-believers.
According to the CIA's World Fact Book, Spain is 94% Catholic and 6% other.
All religions are allowed in Spain, although the Roman Catholic Church is, by far, the most popular.
70% of all Spaniards are Roman Catholic which is a denomination of Christianity. 2% other religions,25% no religion
Most likely Catholic but some experts say that Christianity is a popular and GROWING religion in Spain.
muslim and catholics
Spain.