A lever-back earring is an earring fitting in which the back wire passes through the pierced earlobe and is secured by a hinged closing lever, sprung against the back of the ear, that locks the wire in place. It is one of the most secure of the standard earring fittings, intermediate in security between the simple shepherd's-hook fitting (which has no closing mechanism and relies on the wire's curve) and the screw-back or omega-lock fitting (which uses a more positive closure but takes longer to put on).

The mechanical design has been essentially unchanged since the late nineteenth century. A curved wire enters the front of the lobe, passes through, and meets a hinged lever on the back side; the lever pivots on a small spring-loaded pin and snaps shut against the back of the wire to lock the assembly. Opening it requires deliberate squeezing of the lever against the wire, which makes accidental opening (the principal failure mode of unsecured fittings) very unlikely. The fitting is suitable for moderate-weight pendants, drop earrings and chandeliers; very heavy earrings still benefit from a posted construction with omega closures or post-and-screw backs.

For the bench, lever-backs are sold as findings in gold, palladium-white-gold, platinum, sterling silver and rhodium-plated bases, in a range of sizes calibrated to match the post-front design they will be paired with. Repair work on lever-backs typically involves the spring (which fatigues over time), the pivot pin (which can wear or break), and the lever's closure surface (which can deform if the earring is repeatedly forced open without depressing the lever properly).