Union Sunday School is an historic building located in Clermont, Iowa, United States.

[1] Initially, the building housed Clermont Presbyterian Church, which disbanded shortly afterward.

[2] In 1863, the Presbytery and the Union Sunday School entered into an agreement whereby the latter could use the building as long as they were able to maintain it.

[3] A group of people in town wanted to start Protestant services, and beginning in 1933 the Rev.

The Presbytery of Northeast Iowa donated the building to the non-profit Historical Governor Larrabee Home in 1970.

Its corners feature capped pilasters that frame the double louvered panels of the bell chamber.