Abstract A new distribution map is provided for Sclerotium cepivorum Berk. Hosts: Onion, shallot, leek etc. ( Allium ). Information is given on the geographical distribution in Africa, Egypt, Libya, South Africa, Uganda, Zimbabwe, Asia, China, India, Uttar Pradesh, Delhi, Iran, Israel, Japan, Philippines, Australasia & Oceania, Australia, New South Wales, Queensland, Victoria, South Australia, Tasmania, New Zealand, Europe, Austria, Azores, Bulgaria, Cyprus, Czechoslovakia, Denmark, Finland, France, Germany, Greece, Irish Republic, Italy, Netherlands, Norway, Poland, Romania, Spain, Sweden, Switzerland, UK, USSR, Yugoslavia, North America, Canada, British Columbia, Manitoba, Quebec, Mexico, USA, California, KY, Louisiana, New Jersey, Ohio, Oregon, Pennsylvania, Texas, Virginia, South America, Argentina, Bolivia, Brazil, Minas Gerais, Sao Paulo, Rio Grande do Sul, Chile, Colombia, Uruguay, Venezuela.