Abstract: With the knowledge that the air resistance acting on the body of automobile when it is driven at high velocity is directly related to the fuel efficiency, it is now being considered as a highly important issue in designing of automobile. This study aims to research how the velocity, pressure and phenomenon of turbulence due to the air flow occurring around the shark antenna of automobile are generated when the vehicle is running and what effects they have. In this study, commercially available shark antenna models are 3D modeled with CATIVA design program and the simulated flow analysis was executed on these models by using ANSYS finite-element analysis program. After having 3D designed the shark antenna models for each of the configurations, it was possible to confirm the characteristics of the air flow of each of the shark antenna models by executing flow analysis. As the results of the research, it was determined that the K-type shark antenna model is the most appropriate model for application to vehicles since it displayed lower values in all the comparison items including maximum flux, maximum pressure and distribution area of high pressure in comparison to those of the H-type and G-type shark antenna model. Accordingly, it is deemed that this model can make contributions towards the reduction in the resistance against air and the ensuring improvement of fuel efficiency, etc. This study is on the research of the air flow of shark antenna applied to automobiles. It is deemed that the data secured through the corresponding research can be used as basic data for more advanced shark antenna design and researches related to the characteristics of air flow of automobile being driven.