Signature Guitar Company was a Canadian guitar builder based in Aurora, Ontario, that operated from 1987 to 1990. The small shop produced handcrafted electric guitars and basses and offered a distinctive custom touch — buyers could have their name inlaid into the fretboard, which gave the company its name.

The brand's best-known models include the Aurora and Oracle electric guitars and the Excalibur bass. Instruments were typically fitted with Evans pickups and custom electronics, and the company built its reputation on high-quality fit, finish, and player-focused design, captured in its motto "Made for Musicians, by Musicians."

Signature's profile was raised considerably by its association with Rush guitarist Alex Lifeson, who was involved with the company in its early days and used Signature instruments, most notably the Aurora, extensively during the Hold Your Fire era and on the A Show of Hands tour. Though the original company was short-lived, surviving Signature guitars are collected as a piece of Canadian guitar-building history and can command significant prices on the vintage market.

Signature Guitar Company has 2 products cataloged on Equipboard, including Solid Body Electric Guitars. Their gear is featured by 1 artist, with the strongest followings in Rock. Notable users include Alex Lifeson.