ACM Multimedia 2024, Multimedia in the Generative AI Era, calls for research papers presenting novel theoretical and algorithmic solutions addressing problems across the domain of multimedia and related applications. The conference also calls for papers presenting novel, thought-provoking ideas and promising (preliminary) results in realizing these ideas. Submissions are invited in the following 4 themes containing 12 areas: Engaging Users with Multimedia Emotional and Social Signals Multimedia Search and Recommendations Summarization, Analysis and Storytelling Experience Interactions and Quality of Experiences Art and Culture Multimedia Applications Multimedia Systems Systems and Middleware Transport and Delivery Data Systems Management and Indexing Multimedia Content Understanding Multimodal Fusion Vision and Language Multimedia Interpretation Multimedia in the Generative AI Era Multimedia Foundation Models Generative Multimedia Social Aspects of Generative AI