Patients with chronic health needs, including those with cancer, and their providers face numerous challenges during the COVID-19 pandemic. Survey results from 356 health care centers across 54 countries indicate that the impact of the COVID-19 pandemic on cancer care is widespread. Many centers reported challenges in delivering care, reduction in services, lack of personal protective equipment, staffing shortages, and limited access to medications. Respondents also reported potential patient harm due to interruptions in cancer-specific and non-cancer care.