Catholic branch church in Lohen, Catholic branch church in Lohen, Germany.

St. Johannes Evangelist in Lohen is a choir tower church: the lower storeys of the tower are medieval, while the 18th-century upper storey with chamfered corners carries an eight-sided pointed spire clad in red-brown tiles. The nave beside it has a steep gable roof and white walls with two arched, grilled windows flanking a round metal cross frame. Inside, flat ceilings cover nave and choir, with a wooden gallery and organ opposite the altar.

The lower storeys of the choir tower date from the Middle Ages. In the 18th century the tower was raised by one storey with bevelled corners to house the bell frame and capped with an eight-sided pointed spire; at the same time the nave with its gabled roof was added. The high altar is late 18th-century Neoclassical, the side altars Rococo, and the pulpit was installed around 1720.

The church is a branch of the parish of Untermässing, within the Greding pastoral association of the Diocese of Eichstätt. Its dedication to John the Evangelist is recalled in the name Johannes, and the interior holds a classicist high altar from the late 18th century, Rococo side altars and a pulpit installed around 1720.

The church is located in Lohen and can be reached on foot when visiting Thalmässing municipality. Visitors should approach respectfully as it remains an active religious site, and can explore the architecture both inside and out.

The organ on the gallery has five registers on one manual and pedal, with mechanical slider chests. Neither its builder nor its year of construction is recorded; in 1935 the Josef Bittner organ workshop rebuilt it thoroughly. Visitors can spot the instrument opposite the altar, beside the open-tread wooden staircase.