Avirex is an American company that designs, manufactures and markets clothing lines. It was founded by Jeff Clyman in 1975 as a brand for military apparel. Contrary to popular belief, Avirex was not a U.S. military supplier during World War II.^{[citation needed]} In 1987 the company worked on re-issuing of A-2 jacket for the United States Air Force.

In 2006, Jeff Clyman sold the Avirex brand and trademark as well as the Avirex sportswear and hip-hop fashion lines in Europe, Japan, and the United States. The new owner of the US Avirex brand in the United States is Centric Brands.