La Mamelle, Inc. / Art Com was a not-for-profit arts organization, artist-run space, or alternative exhibition space, active from 1975 through 1995 in the San Francisco Bay Area. The organization's first venture was publishing but it became involved in a multiplicity of activities including maintaining an artists' space and presenting exhibitions and events of mail art, performance art, conceptual photography, video art production and screenings, a library, distributing artist-produced works, and creating one of the first artists' online networks.