Friction welding is a solid state welding process that generates heat through mechanical friction between a rotating or moving component and a stationary component. The principal advantage of frictional welding, being a solid state process is low distortion, absence of melt-related defects and high joint strength, even in those alloys that are that considered non-weldable by conventional welding techniques. Friction welding is further divided into as per type of drive, relative motion between work pieces. Numerous experiments have been performed using different materials and parameters and studied their effect on join strength. Friction welding obtained by frictional heat & it’s a commercial process, which has found several applications in different manufacturing processes with the advancement in technology. Friction welding is one of the most widely used in the automobile industry after electron beam welding process. This paper presents a review of friction welding and various research done in this field.