In this review, the classical and contemporary wear theories and wear mechanisms are discussed. The development of wear theories are started from adhesive and abrasive to delamination theory, mechanical mixed layer (MML) and self lubrication theory are reviewed based on the previous reports. It was found that the adhesive and abrasive are developed based on quantitative approach whereas the delamination, MML and self lubrication theory are developed based on qualitative approach. Each theory has limitation in order to explain the wear theory comprehensively because of different testing system, composite manufacturing technique, type of reinforcement and volume fraction, size as well as hardness. However, a consensus has been reach from a qualitative point view. Theory of wear debris generation mechanism is the consequence of a combination of subsurface, surface and third body dynamic behaviours. This approach applied in order to explain the wear mechanism usually encountered such as adhesive, two-body abrasive, three-body abrasive, oxidation and delamination. Wear mechanism that occurred during dry siding wear of hybrid composite (multiple reinforcement composite consist of combination of hard and soft reinforcement) is combination of various mechanism and highly complex phenomenon. It well known that wear is nature process that what happen at one time is function of all event that occurred previously. Therefore, based on previous work on dry sliding wear of multiple reinforcement composite, it might be proposed that the wear mechanism involved in integrated wear mechanism.