Peak is a digital audio editing application for the Macintosh, used primarily for stereo/mono recording, sample editing, loop creation, and CD mastering. It is commonly used by amateur and professional audio and video editors, mastering engineers, musicians, sound designers, artists, educators, and hobbyists.

It was published by the now defunct company BIAS Inc. in several editions, with varying levels of features.

Peak differs from Digital audio workstation-type audio editing applications in that most of its editing is done directly at the file level, without having to first create a project and import the audio to be edited into it.

Peak can be assigned to many DAW-type applications as a supplemental external sample editor. When used in this capacity, it is similar to having Peak's editing capabilities available as a plug-in within the other application.

BIAS Inc. ceased all business operations as of June, 2012.