Angkola Protestant Christian Church or Christian Protestant Angkola Church abbreviated as GKPA, is a church Christian Protestant synod in Indonesia with its head office in Padangsidimpuan, North Sumatra province. This church organization was officially established on October 26, 1975, when it obtained autonomy from Huria Kristen Batak Protestant (HKBP), under the name HKBP-A. In 1988 it merged with the "Angkola Protestant Church (GPA)", and began to take the name "Angkola Protestant Christian Church". GKPA serves specifically the Angkola Batak community in their local language.