Founded by Laurens Hammond in 1934 in Evanston, Illinois, Hammond is one of the most influential keyboard instrument manufacturers in music history. Originally incorporated as the Hammond Clock Company in 1928, the company pivoted to organ manufacturing and introduced the Model A in 1935 — the first commercially successful electric organ. Over 1,750 churches purchased a Hammond organ within the first three years. In 1954, the company introduced the B-3, which became one of the most iconic keyboard instruments ever made, defining the sound of jazz, gospel, rock, and soul music for decades. The original Hammond Organ Company ceased production in 1985, and the brand was acquired by Suzuki Musical Instrument Corporation in 1989, which continues to manufacture organs and keyboards under the Hammond-Suzuki name from Elmhurst, Illinois.

Hammond's product line includes console organs like the B-3mk2, portable keyboards such as the XK-7 and XK-4, as well as Leslie speakers — the rotary speaker cabinets that became inseparable from the Hammond sound. The Leslie speaker, invented by Donald Leslie in 1939, produces the signature swirling, Doppler-effect tone that defines the Hammond organ experience. Hammond also produces melodions, pedalboards, and a range of accessories.

The Hammond B-3 and its variants have been central to countless genres. Jimmy Smith brought the instrument to prominence in jazz, Keith Emerson pushed it to extremes in progressive rock with Emerson, Lake & Palmer, Booker T. Jones made it the backbone of soul music with "Green Onions," Jon Lord drove it through Marshall stacks in Deep Purple, and Steve Winwood, Gregg Allman, and Joey DeFrancesco are among the many artists synonymous with the instrument.

Hammond has 84 products cataloged on Equipboard, including Organs, Bags, Cases & Covers, and Univibe & Rotary Effects Pedals. Their gear is featured by 314 artists, with the strongest followings in Rock, Pop, and Funk / Soul. Notable users include Richard Wright, Jon Lord, and Rick Wakeman. Hammond's catalog spans the full price spectrum — from entry-level options to high-end flagships.