1100 Architect is an architecture firm based in New York City and Frankfurt founded by principals David Piscuskas and Juergen Riehm.

It provides architectural design, programming, space analysis, interior design, and master planning services to both public and private clients, and its work includes educational and arts institutions, libraries, offices, residences, retail environments, and civic facilities.

The company was founded in 1983 in SoHo, Manhattan as a design studio of three architecture school graduates.

Award-winning projects include the design for the Children's Library Discovery Center in New York City,[3] Calvert Vaux Park Facility in New York City,[4] and a residential house in Palm Beach, Florida.

[citation needed] In 2013, the company's design for a house in Palm Beach, Florida received the Elizabeth L. and John H. Schuler Award which annually recognizes design "in keeping with the traditional character of Palm Beach architecture.