Transit-oriented development (TOD) in Saudi Arabia is becoming a significant priority for the government and developers to create a sustainable and quality living environment. TOD is an integrated transport and urban planning method that aims to reduce car use and urban sprawl, increase the use of public transport, and enhance sustainable mobility. To meet the global goals as per the Paris Accord, Saudi Arabia’s policymakers must prioritize the integration of TOD in urban planning. This study was carried out with the main aim of identifying the environmental, social, and economic benefits of implementing TOD in Riyadh, Saudi Arabia. A mixed-study research method was used, and data were collected using a questionnaire survey and semi-structured interviews. The quantitative data were analyzed using SPSS version 21, and qualitative data were analyzed using NVivo software. The findings of this study show that TOD in Riyadh City would positively impact economic, environmental, and social aspects. TOD would reduce travel time, allow its people to have an active lifestyle, and reduce congestion. TOD would help reduce mental health disorders and improve physical activity. TOD would positively impact the environment of Riyadh City and assist in reducing greenhouse gases. Overall, the study results provide a reliable perspective on the benefits of TOD. Most participants assumed that the implementation of TOD in Riyadh City would increase automobile mobility, provide more employment opportunities, and reduce travel time, positively impacting the environment and economy of Riyadh City.