​Three Rivers Advertising Specialty Association, TRASA, is a promotional products association established in 1992 and located in Pittsburgh, PA.

TRASA serves western Pennsylvania and northern West Virginia promotional marketing professionals providing them with educational and networking opportunities, business-building resources, and five annual trade shows in Canonsburg, Altoona, Erie, Harmony, and New Castle, PA. TRASA membership is made up of distributors, suppliers and multi-line representatives in the promotional products industry. TRASA serves nearly 225 members across the United States.