Tenax may refer to:
The trademark name of Poly(2,6-diphenylphenylene oxide), a chemical compound Phormium tenax, a species of flowering plant Fasolasuchus tenax, a species of pseudosuchian. A brand of glue marketed by Toho Tenax Zeiss-Ikon Tenax I camera Zeiss-Ikon Tenax II camera Tenax Grupa, a construction material manufacturer based in Dobele, Latvia