Abstract: A light fixture extension adapter includes a body, a male stud on one opposite end portion of the body for extending through a mounting hole in a light fixture cover extending between opposite outer and inner faces of the light fixture cover and adapted for fastening a cap of the light fixture on the male stud so as to dispose the light fixture cap adjacent to the outer face of the light fixture cover, a female socket on the other opposite end portion of the body and disposed adjacent to the inner face of the light fixture cover and adapted for fastening a nipple of a light fixture thereto, and an abutment structure disposed on the body for abutting against the inner face of the light fixture cover such that upon fastening the light fixture cap on the male stud the light fixture cover is clamped between the abutment structure and light fixture cap.