Abstract
This paper conceptualises mathematics leadership using cultural-historical activity theory (CHAT). Qualitative data were generated with three primary school mathematics leaders and analysed focusing on motive objects of activity. Analysis showed that the leaders directed their leadership at multiple motive objects, establishing mathematics leadership as poly-motivated activity. This conceptualisation reveals the interplay between building relationships, developing teachers' practice and knowledge, and managing demands of the leadership role. The findings contribute to mathematics leadership theory and offer implications for practitioners and researchers.