Wilson Associates, founded in 1971 by Trisha Wilson, was a Dallas-based interior architectural design firm specializing in luxury hotels, resorts, and casinos. Over nearly 50 years, the firm designed over one million guestrooms worldwide, offering a full range of services from space planning to construction administration. Known for a design philosophy centered on market-specific solutions rather than a singular house style, Wilson Associates employed over 300 architects and designers across a global network of offices. Originally a private company, Wilson Associates was acquired by East China Architectural Design & Research Institute Co. Ltd. (ECADI), a subsidiary of Shanghai Xian Dai Architectural Design (Group) Co., in 2014. The company filed for bankruptcy and liquidation in 2021.