L. Luthier is a Malaysian guitar and ukulele maker founded in 2009 by Adwin Lai, working alongside a team of craftsmen to produce handcrafted acoustic guitars, classical guitars, and ukuleles. The name nods to the traditional term for a stringed-instrument maker, and the brand pitches itself as guitarist-centric, with design choices aimed at playing comfort rather than purely traditional construction.

The company is best known for its Le Guitar series, which features a secondary soundhole oriented toward the player so the guitarist hears more of the instrument's projection directly. Its catalog includes acoustic models such as the Junior 101, Black Forest, and Eden TR, alongside a range of tenor and concert ukuleles like the Manga, Rose, and M6 EQ Tenor. Instruments are typically offered with a setup warranty and limited warranty.

After beginning to export in 2013, L. Luthier expanded its presence through exhibitions in China, Russia, Europe, and the United States, and is distributed through specialty acoustic and ukulele retailers internationally. The brand occupies a niche of affordably priced handmade instruments with distinctive body designs rather than reproductions of classic shapes.

L.Luthier has 2 products cataloged on Equipboard, including Steel-string Acoustic Guitars.