The structural stability of high rise buildings, particularly in seismically active regions, poses unique challenges. Various structural systems, including the outrigger system, have been developed to mitigate these challenges by reducing the lateral displacement of tall buildings and enhancing their seismic performance. This paper presents a seismic analysis of a high rise building equipped with an outrigger system to understand better the behavior of its structural elements. The outrigger system comprises vertical elements that connect the building's core to its perimeter columns, typically made of reinforced concrete or steel, acting as a horizontal truss to minimize horizontal movement and foundation moment. This study constructed three models of buildings with 30, 40, and 50 stories, using different materials for the vertical elements. These models were sub jected to gravity and seismic loads, and the data were analyzed using ETABS software. A total of 18 building models were tested to determine the optimal position of the outrigger system and evaluate the overall structural behavior. The findings indicate th at shear wall outriggers without a belt truss provide superior performance compared to beam outriggers with a belt truss, particularly in terms of maximum story drift, displacement, and stiffness. Shear walls, typically made of reinforced concrete, offer g reater stiffness and strength than beams. This study's results can inform the design of high rise buildings using appropriate materials to better withstand seismic loads.