Milletto-South Sudanese philosophy, South Sudanese Millettism, or South Sudanese Astronism refers to the presence of The Philosophy of Millettism in South Sudan under management and philosophical jurisdiction of The Institution of The Philosophy of Millettism for the Republic of South Sudan, a national subsidiary for the worldwide Institution of the Philosophy of Millettism.
The Institution of the Philosophy of Millettism for the Republic of South Sudan oversees the construction and maintenance of observatories and planetariums throughout its jurisdiction. South Sudan is split into twenty-eight states and holds one Grand Observatory in the capital city of Juba.
This national branch of The Institution of The Philosophy of Millettism manages the official representation and depiction of Astronism throughout this territory, including efforts to protect the identity of the philosophy with the intention of further disseminating it throughout the territory. It is The Institution alone that is granted the status of proprietor to the philosophy in this territory as any other organisations or institutions proclaiming such a role are deemed as unauthorised proprietors and are therefore considered as part of the anti-Institutionist movement.