Partsland is a South Korean supplier of guitar and bass components based in Incheon, operating since 1991. The company functions as a B2B platform for manufacturers, retailers, and repair shops worldwide, with a consumer-facing storefront at theguitarparts.com. It is part of the WSC Music group, which also includes the Roswell Pickups and TUNE Guitar Technology brands.

The catalog covers pickups (single coils, humbuckers, P/J bass pickups), tuning machines, bridges and tremolos, pickguards, knobs, electronics, truss rods, and acoustic-guitar parts including nuts and saddles. The Roswell pickup line, launched as a renamed extension of WSC's long-running OEM pickup business, is the brand's most visible product family at retail. Partsland also sells B-stock and clearance inventory through its own site.

The company has built much of its reputation as an OEM supplier — its pickups and hardware appear in instruments built by guitar factories across East Asia and the United States, including products in Thomann's Harley Benton range. It is more commonly encountered by players as a parts and upgrade source than as a builder of finished instruments.

Partsland has 2 products cataloged on Equipboard, including Guitar Potentiometers.