Tsutomu Nishioka (西岡 力, Nishioka Tsutomu, born 1956 in Tokyo) is a professor of International Christian Studies at Tokyo Christian University. He specializes in Japan-Korean relations, South Korea/North Korea Studies. His research focuses on the Comfort women and the North Korean abductions of Japanese citizens. He is a chairman of the National Association for the Rescue of Japanese Kidnapped by North Korea (NARKN).