What religion is South Sudan?

Excuse me, but I believe there might be a bit of a misconception in your question. South Sudan, as a nation, does not have a single, official religion in the same way that some other countries might. Rather, it is a diverse country with a variety of religious beliefs and practices represented among its population. The majority of the population in South Sudan adheres to Christianity and Islam, with Christianity being the largest religion in the country. However, there are also other religious groups present, such as traditional African religions and smaller minorities of other faiths. So, to answer your question, South Sudan does not have a single, definitive religion, but rather a diverse mix of beliefs and practices.