Abstract: This data set contains data on the physical flow characteristics, mass balance, sub-glacial topography, and recent fluctuations of the Heard Island glacier. The data were collected for The Antarctic Science Advisory Committee (ASAC) project 2363, a continuation of ASAC project 1158. A full report of the data collected and the work completed are available for download with the data. The data were collected by the Heard Island glaciology team during the 2003-04 Australian Antarctic Division expedition, as well as some data from the previous expedition in November 2000.