Recently, a major debate has arisen over the interpretation of Monte Albán Tomb 7. This debate hinges, in part, on whether the skeletal assemblage comprised either primary or secondary burials. Previous studies of Mesoamerican mortuary practices generally have recognized only primary and secondary burials in tombs. Findings from a recently excavated tomb in Ejutla, Oaxaca, demonstrate that a third possibility exists: multiple-interment tomb assemblages. These assemblages result from a process we call “ongoing tomb use.” Based on comparisons with the Ejutla interments we propose that the Monte Albán Tomb 7 assemblage may have resulted from ongoing tomb use.