The Ishinomaki Saint John the Apostle Orthodox Church (Ishinomaki Harisutosu Seikyōkai, Sei-shito Ioan Seidō) is an Orthodox Church in Ishinomaki, Miyagi, dedicated to St. John the Apostle, belonging to Orthodox Church in Japan. The original structure was built in 1880.
As the old church building (Sei-Shito Ioan Kaidō) was damaged in 1978 Miyagi earthquake, it was reconstructed in a new location. Today, Ishinomaki Orthodox Church uses the other new church building after the earthquake. Sei-Shito Ioan Kaidō is listed on Ishinomaki Cultural Heritages by municipality. It is the oldest wooden church building among existing wooden churches in Japan.