Cadac is a British manufacturer of professional audio mixing consoles, founded in 1967 when Clive Green, Adrian Kerridge, David Bott and Charles Billet set out to build a solid-state desk for London's Lansdowne Studios. The brand name is an acronym formed from the founders' first names. Early Cadac recording consoles became fixtures at studios such as Lansdowne, Manor, Wessex and George Harrison's Friar Park.

In 1984 the company built its first console for live theatre, and Cadac desks went on to become a default choice for large-scale West End and Broadway musicals, with installations on long runs of The Phantom of the Opera, The Lion King and Mamma Mia!. Notable analog products from this era include the J-Type and A-Series consoles. The company was acquired by China's Soundking Group in 2009, and manufacturing of its modern digital products has been based in the UK.

The brand operates under two divisions: Cadac Consoles, which makes UK-built digital mixers for touring, theatre, installation, house of worship and broadcast applications, and Cadac Immersive. Its digital flagship is the CM-Series integrated mix system, including the CM-J50 mixer, dedicated CM-SR stage racks and CM-J control software. The earlier Live1 was the company's first compact digital live console.

Cadac has 2 products cataloged on Equipboard, including Mixers. Their gear is featured by 2 artists, with the strongest followings in Electronic and Rock. Notable users include Joris Voorn and Tony McPhee.