The Joint Mission Committee of the Irish and Scottish RP Churches oversees their foreign, home, and Irish mission works.

The purpose of this Board of the Reformed Presbyterian Church of North America, is to carry on the work of missions in a fashion that is truly Biblical in its objectives, motives and methods.

The Home Mission Board of the RPCNA seeks to advance the Kingdom of Christ, specifically through strengthening and expanding the church in both its organization and its evangelical witness and teaching.