Église réformée Saint-Jean, Protestant church in 7th arrondissement, Paris, France.

Église Saint-Jean is a Lutheran church at 147 rue de Grenelle, built 1910–1911 in Gothic Revival style by architects Achille-Henri Chauquet and Jean Naville. Its pale stone facade has three pointed-arch openings, the inscribed words "EGLISE ST JEAN", a rose window and a central tower with a slim spire. The interior is a Latin cross with a narthex, single nave, transept and choir under an exposed wooden vault.

Lutheran Alsatians settled in the Gros-Caillou district in the late 19th century; pastor Eugène Berger opened a school on avenue Bosquet in 1862. Denis Bühler, who lived at 147 rue de Grenelle since 1843, left the property to the Lutheran church on his death in 1890. Architects Achille-Henri Chauquet and Jean Naville built the church in 1910–1911, and it was inaugurated on 26 February 1911.

The parish has been served by eleven pastors since 1862. The choir windows, given in 1912 by pastor Henri Bach, his wife Elisabeth Bach-Gladstone and her Scottish sister Florence M. Gladstone, show Christ appearing at the Sea of Tiberias and asking Peter "Do you love me? Feed my sheep". The transept windows of 1913 honour Georges Westercamp (1838-1907).

The building functions as an active place for Protestant worship and community activities on a regular basis. Visitors should check opening times in advance, as access outside of services may be limited.

The building maintains Gothic Revival features while incorporating Protestant simplicity, creating a religious space that differs from Catholic churches in Paris.