The Ishinomaki Saint John the Apostle Orthodox Church (Japanese: 石巻ハリストス正教会 聖使徒イオアン聖堂: 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 (Japanese: 聖使徒イオアン会堂: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 (whose name is almost same; "Japanese: 聖使徒イオアン聖堂:Sei-Shito Ioan Seidō", likewise dedicated to St. John the Apostle) 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.