Marcus Thomas LLC Employee Directory
Advertising ServicesOhio, United States51-200 Employees
Marcus Thomas LLC is a midsize advertising services agency based in Cleveland, Ohio, delivering fully integrated marketing communications. The firm centers its work on audience insight, idea generation, and alternative delivery, coordinating research, account service, creative, media, and public relations across four communities of practice. It organizes its teams around four market focuses—CPG, B2B, Home & Garden, and Professional Services—to align offerings with sector-specific needs. Founded through the merger of two longstanding Northeast Ohio firms, Marcus Advertising (Cleveland, 1946) and Ira Thomas Associates (Youngstown, 1937), Marcus Thomas later expanded its digital capabilities by acquiring DigiKnow in 2011. The agency further broadened its scope with the 2018 acquisition of Devs United, a customer engagement technology company. Leadership within the firm evolved in 2019, with appointments impacting diversity, operations, and creative leadership.