Manzer Guitars is the workshop of Canadian luthier Linda Manzer, based in Toronto, Ontario. Manzer apprenticed with Jean Larrivée in the mid-1970s and later studied archtop construction with James D'Aquisto in New York, establishing her own shop in 1978. The workshop builds custom flat-top steel-string acoustics, archtop jazz guitars, and an array of experimental multi-neck and harp guitars.

Manzer is widely associated with her long-running collaboration with jazz guitarist Pat Metheny, for whom she has built more than two dozen instruments, including the 42-string, multi-neck Pikasso guitar. Other notable players who own Manzer instruments include Carlos Santana, Julian Lage, Bruce Cockburn, Milton Nascimento, Paul Simon, Liona Boyd, and Gordon Lightfoot. The shop produces a small number of instruments per year, each built largely by hand.

Manzer has been recognized for her contributions to Canadian lutherie, and was appointed an Officer of the Order of Canada in 2023. Her work is regularly featured in archtop and acoustic guitar collections and exhibitions.

Manzer has 12 products cataloged on Equipboard, including Steel-string Acoustic Guitars, Semi-Hollowbody Electric Guitars, and Classical & Nylon-String Guitars. Their gear is featured by 2 artists, with the strongest followings in Jazz. Notable users include Pat Metheny and Julian Lage.