There were lots of pagan Roman gods. We know lots about them because the Romans wrote a lot of stories about them. This is called their 'mythology'. Mythological stories are stories made up to explain things in times before proper science. People believed they were true at the time. Roman gods were the same as Greek gods, but they had different names. When the Romans conquered Britain, they looked at Iron Age Celtic British gods and their special abilities. They decided that a lot of these must also be the same as their gods under different names. However, they ended up identifying Roman gods with more than one Celtic one. There are far too many gods to list, but here are some of the ones that were popular in Britannia.

The Romans also brought the worship of gods from other parts of the Empire to Britain. They were often very mysterious, like Mithras from Persia (Iran) or Isis from Aegyptus (Egypt). Later, the single Christian God became popular; but, when the Saxons settled in Britain, they worshipped lots of pagan gods too.