‘Prolonged Grief Disorder’ (PGD) is a newly recognized mental health disorder included in the World Health Organization’s disorder classification manual, the ICD-11 (Killikelly & Maercker, 2017). The definition of PGD for the ICD-11 is based on symptoms found in Western society and these guidelines for diagnosis have been appropriately validated in European and North American and some Chinese samples. We have developed the International Prolonged Grief Disorder Scale that has been specifically tailored to include culturally specific symptoms of grief. We aim to validate this new scale in multiple samples around the globe.