The Diocese of Lapua (Finnish: Lapuan hiippakunta, Swedish: Lappo stift) is one of nine dioceses within the Evangelical Lutheran Church of Finland.

The diocese was founded in 1956.

The diocese attained national attention in September 2015, when Finnish media reported that the diocese had purchased a luxury penthouse apartment for the bishop's official residence.

Due to the controversy, hundreds of Finns resigned from the church during the days following the media exposure.

This article about an organisation in Finland is a stub.