The Iglesia ni Cristo chapel in Washington D.C. in the United States is located along 16th Street.

It used to be a place of worship and school of the Saints Constantine and Helen Greek Orthodox Church.

The Iglesia ni Cristo through the Allison James Estates & Homes purchased the chapel building from Summit Commercial which represents the Greek Orthodox church for $9.2 million in November 2012.

The former Orthodox church building has one story and a basement with a land area measuring 14,800 square feet (1,370 m2) is located within a 1.82 hectares (196,000 sq ft; 18,200 m2) parcel of land.

The former school building within the complex is three stories high and measures 16,370 square feet (1,521 m2).