The Protestant Christian Church of Nias (Indonesian: Orahua Niha Keriso Protestan) is a Lutheran denomination in Nias, North Sumatra.
The Rhenish Missionary Society started work in Nias under leadership of E. Ludwig Denninger in 1865.
Until the 1900's, when the Dutch colonial period came, the progress of the denomination was very slow.
Currently the island has a population of 500,000 members; 73% of them are Protestant, 18% Roman Catholic and 7% Muslim.
The church has approximately 357,000 members and 100 parishes spread throughout Indonesia (not limited to Nias island).