This interactive and engaging workshop will focus on organ at risk delineation in the head and neck region. The workshop will use a combination of contouring exercises based on CT imaging, as well as online lectures where current contouring guidelines will be discussed in detail. Using the FALCON-Educase platform, participants will be able to hone their skills based on feedback from experts. In the advent of the autocontouring era, it is particularly important to have a good knowledge of contouring guidelines of organs at risk, to be able to adapt autocontours appropriately. The aim of this workshop is to develop participants’ knowledge and interpretation of contouring guidelines. In doing so, this workshop hopes to improve standardisation in organ at risk delineation for head and neck radiotherapy.