Truszczynski served on the Executive Committee of the Association of Logic Programming, was Chair of the Steering Committee of Nonmonotonic Reasoning Workshops, and President of Knowledge Representation Inc. He served as an editor and associate editor on boards of Journal of Artificial Intelligence Research, and Artificial Intelligence Journal. He is now Editor-in-Chief of Theory and Practice of Logic Programming, and an associate editor of AI Communications.
In 2013, Truszczynski was elected Fellow of the Association for the Advancement of Artificial Intelligence (AAAI). In 2021, he was elected Fellow of the Asia-Pacific Artificial Intelligence Association (AAIA), and in 2023 he received the Dov Gabbay Prize.
In 2023, Truszczynski retired from the University of Kentucky.