Ransiki is a small town and administrative district located in the Indonesian province of West Papua. Covering an area of 178.61 km², the district serves as the administrative seat for the South Manokwari Regency.
The population of Ransiki District grew from 7,683 residents in 2010 to 16,245 by the 2020 census, with a mid-2024 estimate of approximately 18,303 people. The town is served by Ransiki Airport.