ACT is a German record label founded in 1992 by Siegfried Loch. It is a division of ACT Music + Vision founded by Loch and Annette Humpe in 1988. ACT started as a pop music label but folded soon after it started. Loch turned it into a jazz label, at first reissuing music he had recorded for Liberty, Philips, and WEA before turning to new recordings.

Siegfried "Siggi" Loch is a German record producer, a record industry executive, and the founder of the ACT Music record label. As both a producer and record label pioneer, Loch is considered to have had a significant impact on the exposure, development, and success of modern jazz music, particularly European jazz.