Protec is a Fullerton, California–based designer of protective cases, gig bags, and accessories for musical instruments. Founded in 1969, the company built its reputation around purpose-built protection for fragile and expensive gear, working with professional musicians to refine its designs. Its catalog spans nearly every major instrument family, with cases and bags for trumpets, trombones, French horns, saxophones, clarinets, flutes, violins, cellos, guitars, basses, ukuleles, drums, cymbals, and orchestral instruments, alongside accessories like mute bags, reed cases, music folders, and stand bags.

The brand's defining product line is the PRO PAC case, a category it patented in 1984. PRO PAC cases pair a lightweight, shock-absorbing molded interior with a soft-sided exterior, offering hard-case-level protection in a form factor closer to a gig bag. Alongside PRO PAC, Protec sells the Max line of padded gig bags, the heavier-duty IPAC and Contoured PRO PAC series, and the Deluxe and Standard fabric bag lines aimed at students and casual players.

Protec sits in the accessories and instrument-protection niche rather than the instrument-builder world, and its products are stocked broadly through retailers such as Musician's Friend, Music & Arts, Sweetwater, Gear4music, and Reverb. The company is known among brass and woodwind players in particular, where its PRO PAC trumpet, trombone, and saxophone cases are a common alternative to traditional wood-shell cases.

Protec has 7 products cataloged on Equipboard, including Bags & Cases, Pedalboards, and Bags & Cases.