The identity design in subway stations represents the unique aspects of the surrounding society and culture. Additionally, the perceived value of rapid transit can be enhanced when distinct features enable stations to stand out from each other. This article aims to study and categorize the types of identity found at these stations, examining how the design process can profoundly impact aesthetics and enhance communicative value. The methods used in this study explored and analyzed elements in subway stations across three regions in Japan: Kansai, Chubu, and Kanto. The research also examined four stations in Thailand on the MRT Blue Line to understand the station identity. Questionnaires were distributed to collect feedback from 800 passengers as part of the study. The results categorize the identity of subway stations into four criteria: 1) Historical and Architectural Identity, 2) Cultural Identity, 3) The Identity from cartoons, and 4) Art and Design Identity. The outcome of this research provides valuable guidelines for designing the station's identity. Subway stations comprise essential elements: story, functions, and communication, all contributing to the station's aesthetics. This aesthetic is derived from the station's identity, which is deeply rooted in history, landmarks, traditions, and culture. The creative integration of various station design and construction enhances aesthetic appeal and facilitates effective communication within the station environment. This approach to identity design can serve as a model for future mass transit systems, increasing the station's value and promoting tourism.