MATRIX Architects Engineers Planners, Inc. is an architecture, interior design, engineering and planning firm established in 1984. Its offices are located in Williams Tower Two in downtown Tulsa, Oklahoma, U.S.A.. Notable projects include architects and engineers of record for the BOK Center historic preservation and renovation of Expo Square Pavilion and Tulsa Expo Center. MATRIX also provided design services for an addition and renovation to Edison Preparatory School.