In this paper, we introduce and investigate the notion of anti-submaximal spaces, providing a detailed account of their defining properties. We examine the relationships between anti-submaximal spaces and various related structures, including anti-door spaces, anti-extremely disconnected spaces, and anti-irresolvable spaces. The study is further extended to the class of anti-Gδ-submaximal spaces by replacing anti-open sets with anti-Gδ-sets, and their corresponding properties are analyzed. In addition, we introduce and discuss the concepts of anti-T12 and anti- TD spaces. Finally, we propose an algorithm and flowchart for identifying anti-submaximal spaces, accompanied by a visual representation that aids in conceptual understanding of the framework.