Inherited platelet disorders (IPD) cover a heterogenous group of disorders with large differences in severity, disease mechanisms and prevalence. Pathogenic variants in more than 60 different genes, associated with megakaryocyte or platelet number and/or function, are causal of IPD. Due to disease heterogeneity IPDs are often difficult to diagnose, problematic to manage and underestimated. In the past decade, genetic diagnostics using whole-genome sequencing has revolutionised the field by identifying numerous novel genes involved in IPD aetiology as described in this review.