A workshop titled Advancing Effective Obesity Communications, held September 16, 2019, in Washington, DC, was convened by the Roundtable on Obesity Solutions, Health and Medicine Division, National Academies of Sciences, Engineering, and Medicine. The workshop explored effective communication of obesity-related issues by providing an overview of the current communications environment and addressing the complexity of identifying key audiences and developing targeted messages. Speakers discussed communication strategies to reach specific intermediary audiences (such as the public, decision makers, and policy makers) who influence decisions on such obesity-related topics as nutrition, physical activity, wellness, prevention, and treatment. The workshop also explored challenges in communicating about obesity issues, which include aligning the intended meaning of messages with an individual’s perception of and response to those messages, addressing obesity bias and stigma through communications, and dealing with misinformation.