The technical library was a section of USS Enterprise's library that dealt with technology and engineering. Technical manuals were kept here.

In 2267, Khan Noonien Singh accessed the Enterprise's technical library and made "considerable use" of it, according to Spock. James T. Kirk, having given him prior permission to catch up on what he had missed, dismissed Khan's interest as curiosity and necessity, given that he would be spending the rest of his life in the 23rd century. (TOS: "Space Seed")