Artificial intelligence (AI) plays a growing role in the creation and spread of misinformation, which raises urgent policy challenges. This paper uses a six-dimensional framework to compare how China, the European Union, and the United States regulate AI-driven misinformation. Through analysis of policy documents since 2020, we identify distinct approaches: China emphasizes centralized oversight; the EU adopts a risk-based regulatory model; and the US takes a fragmented, proposal-focused stance. These findings highlight the diverse ways governments are framing and addressing AI-related misinformation and suggest areas for future research and policy development.