The R.C. Williams Warehouse is a Modern Movement style building in New York City designed by noted architect Cass Gilbert. It was built on the west side of 10th Avenue between 25th and 26th Streets, for a wholesale grocery company, the R.C. Williams Company, which began in 1809. The design is a smaller version of Gilbert's design for the U.S. Army Military Ocean Terminal. The building was listed on the National Register of Historic Places in 2005. A school now occupies the building.