The holiday light attachment system is an extension structure. The holiday light attachment system includes an elevated anchor, a cable holder, a shaft mount, an extension shaft, and a light string. The cable holder attaches the light string to the elevated anchor. The shaft mount attaches to the extension shaft. The shaft mount is a tool that secures the cable holder to the elevated anchor. The holiday light attachment system attaches the light string to an elevated structure. By elevated structure is meant a surface that is above the reach of an individual. The holiday light attachment system allows the individual to attach the light string to the elevated structure without having to change the elevation of the individual.