“…Since the 1990s, Greece has been both a transit and destination country for migrants (Stevens, 2018), but when 850,000 people entered Greece in 2015, the situation was termed a ''refugee crisis'' (European Commission, 2017) and a ''global humanitarian crisis'' (UN High Commissioner for Human Rights, 2014). As international humanitarian non-governmental organizations (NGOs) began their operations in Greece, they quickly discovered that, outside the institutionalized humanitarian system, a range of other actors had emerged, including large numbers of Greek solidarians and international volunteers, engaged in activities to support migrants through non-registered, selforganized and self-governed groups.…”