The Coronaviridae are a family of viruses that cause disease in humans ranging from mild respiratory infection to potentially lethal acute respiratory distress syndrome. Finding host factors common to multiple coronaviruses could facilitate the development of therapies to combat current and future coronavirus pandemics. Here, we conducted genome-wide CRISPR screens in cells infected by SARS-CoV-2 as well as two seasonally circulating common cold coronaviruses, OC43 and 229E. This approach correctly identified the distinct viral entry factors ACE2 (for SARS-CoV-2), aminopeptidase N (for 229E), and glycosaminoglycans (for OC43). Additionally, we identified phosphatidylinositol phosphate biosynthesis and cholesterol homeostasis as critical host pathways supporting infection by all three coronaviruses. By contrast, the lysosomal protein TMEM106B appeared unique to SARS-CoV-2 infection. Pharmacological inhibition of phosphatidylinositol kinases and cholesterol homeostasis reduced replication of all three coronaviruses. These findings offer important insights for the understanding of the coronavirus life cycle and the development of host-directed therapies. Display omitted •Genome-wide CRISPR screens for SARS-CoV-2, HCoV-229E, and HCoV-OC43 host factors•Screens correctly identified divergent entry factors for the three coronaviruses•Cholesterol and phosphatidylinositol pathways are shared host dependency factors•Pharmacological inhibition of host factors reduces coronavirus replication To identify host factors required for the infection with SARS-CoV-2 and the common cold coronaviruses OC43 and 229E, Wang et al. conduct genome-wide CRISPR knockout screens. In addition to virus-specific entry factors, they uncover shared host pathways, including cholesterol homeostasis and phosphatidylinositol kinases, required for the infection with all three viruses and demonstrate that pharmacological inhibition of these pathways exhibits pan-coronavirus antiviral activity.