On September 16, 2019, the Roundtable on Obesity Solutions of the Health and Medicine Division of the National Academies of Sciences, Engineering, and Medicine, held a public workshop, Advancing Effective Obesity Communications, in Washington, DC. 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 communications strategies to reach specific intermediary audiences, such as the public, decision makers, and policy makers. 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 addressing misinformation. This publication summarizes the presentations and discussions that occurred at the workshop.