| American Phytopathological Society: International organization that promotes the study and management of plant diseases through journal and book publications, meetings, and electronic resources for students, teachers and researchers. |
| Australasian Plant Pathology Society: Advancement and dissemination of knowledge of phytopathology and its practice, particularly in relation to the Australian region. |
| British Society for Plant Pathology: Founded for the study and advancement of plant pathology. Publishes several journals and disease reports. |
| Canadian Phytopathological Society: Promotes the development and dissemination of plant pathology in Canada through annual meetings, publications and electronic resources. |
| European Foundation for Plant Pathology: Promotes scientific and technical cooperation in plant health in Europe and facilitates the exchange of information between pathologists who are members of national or regional societies. |
| German Phytomedical Society: Promotes and disseminates information relating to plant pathology, entomology and weeds at a national and international level. |
| International Society of Plant Pathology: Worldwide organization supporting the development and dissemination of knowledge about plant diseases and management. Includes links to national, regional and international associated societies. |
| Italian Phytopathological Society: Contains general information and journal details with abstracts. |
| Mediterranean Phytopathological Union: Helps plant pathologists contact one another, and spreads information relating to Mediterranean diseases. |
| New Zealand Plant Protection Society: Professional society researching and publishing biology, ecology and control of weeds, pests, pathogens and beneficial organisms in agriculture, horticulture, forestry and natural ecosystems. |
| Phytopathological Society of Japan: Promotes the increase and diffusion of knowledge relating to plant diseases and their control. Contains abstracts of the societies' journal, membership information, details of local and international meetings, and relevant links. |
| Polish Phytopathological Society: General information, meetings list, publications, photo gallery, and related links. |
| Southern African Society for Plant Pathology: Involved in gathering and disseminating information in southern Africa through publications and seminars. |
| Swiss Society for Phytiatry: Involved in exchange of information between specialists in phytopathology, entomology and weed science. Contains list of meetings, membership form, and relevant links. |
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