TCHS principal Neal Cummins said in a news release that Perrin was selected after consulation with the high school site-based decision making council.
"Perrin is very familiar with the responsibilities of the position, as he served in the same capacity at Christian County High School for five years," Cummins said.
Perrin resigned last month as head softball coach at Austin Peay State University after four seasons. Prior to that, he coached at Christian County for 20 years, compiling a 632-147 record. His teams won four state titles, finished second four times, and won 11 regional championships.
He also won a state championship as wrestling coach at Christian County.
In 1989, Perrin was named athletic director at Christian County where he served for five years.
"He will be an asset to the program in Trigg County. He is highly respected in the education and athletic community," Cummins said.
Perrin replaces Doug Gloyd, who stepped down as athletic director in May after a year and a half in the position.