Acta Astronomica Archive Data related to the paper by Kopacki entitled "Variable Stars in the Globular Cluster M80" The data consist of V-filter light curves of variable stars observed in M80. The light curves are archived in the M80.tar.gz archive. The files are named according to the following way: .dat, where is a designation of the variable star, for example v01.dat. The files contain 3 columns: 1: Heliocentric Julian Day, 2: V-filter differential flux derived from the ISM reductions, 3: Error of the differential flux. Note that differential flux in the ISM is defined as a difference between star's flux in the reference frame and in the current frame. Thus its scale is reversed in the sense that smaller differential flux means that the star is brighter.