Ennead Architects LLP (/ˈenēˌad/) is a New York City-based architectural firm.

The firm was founded in 1963 by James Polshek, who left the firm in 2005 when it was known as Polshek Partnership.

[1] The firm's partners renamed their practice in mid-2010.

[2][1] Media related to Polshek Partnership at Wikimedia Commons