Mr. Scary Guitars is the custom guitar shop of George Lynch, the guitarist known for his work with Dokken and Lynch Mob. The venture grew out of Lynch's long history of modifying his own instruments, beginning with garage work in his early career and evolving into experimental carving and painting on his ESP guitars. Each instrument is designed and hand-built by Lynch himself, with no two builds intended to be the same.

The shop's catalog centers on bolt-on, Floyd Rose-equipped electrics with names like the Copperhead, Emerald Klondike, GL-54, and Headhunter Fossil, alongside one-off pieces such as the Bones Custom, Sun Giant, Tiger Clone, Crazy Horse, Namn-Caster, and Fire Falcon. Common spec choices include Northern Ash or Alder bodies, maple necks with a San Dimas profile, custom hand-wound Arcane pickups (including the signature Mr. Scary humbucker), and German Floyd Rose tremolos with engraved brass blocks and titanium hardware.

Builds typically ship in a snakeskin-trimmed G&G hardshell case embroidered with the Mr. Scary Guitars name, paired with a hand-made certificate of authenticity and a personalized demo video of Lynch playing the finished instrument. Orders are taken directly through the shop rather than through retailers, and finished examples regularly turn up on the secondhand market through dealers like Reverb and Brian's Guitars.

Mr Scary Guitars has 8 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 George Lynch.