ELK was a Japanese guitar, bass, and amplifier brand produced by Miyuki Industrial Co. beginning in the 1960s. Founded by Yamada, Miyuki started in 1953 building amplifiers under the "Echo" name before launching the ELK guitar line around 1965 during Japan's first guitar boom. The name was chosen by guitar division head Takahiro Saito as a nod to "Eleki Gita," the Japanese phrase for electric guitar, and later replaced the Echo branding on amplifiers as well.

ELK produced a wide catalog of instruments heavily inspired by American designs from Fender, Mosrite, Gibson, and Gretsch, including models such as the Country, Wildcat, Galaxy, Cutlass, and the higher-end Custom CM-560 with Schaller pickups. The amplifier line drew visual cues from Fender blackface designs but used original circuits, and included tube models like the Twin Amp 50, Custom Amp 30, and Echo Twin Amp 45, along with tape echo units and an early Big Muff-style fuzz clone. A shrimp-tail headstock and an in-house vibrato unit were common design signatures.

After a 1968 factory fire in Tokyo, guitar bodies and necks were supplied by Matsumoku with final assembly handled by ELK. The brand was acquired by Kanda Shokai, the distributor behind Greco, which gradually phased ELK out in favor of Greco. Miyuki's amplifier factory later shifted to producing amplifiers for Fender Japan under contract with Kanda Shokai. ELK instruments and amps are now collectible on the vintage MIJ market.

ELK has 5 products cataloged on Equipboard, including Fuzz Effects Pedals, Solid Body Electric Guitars, and Electric Basses. Their gear is featured by 5 artists, with the strongest followings in Rock, Pop, and Electronic. Notable users include Wata, Susumu Hirasawa, and Kawabata Makoto.