These files comprise 'Part A' of the questionnaire utilised to populate the inventory of on-farm demonstrations across Europe. The 'farms' file comprises the farmers who responded to the survey; the 'organisations' file the agricultural industry organisations which host or organise demonstrations (e.g. research institutions, agricultural advisory services, farming organisations). Part A identifies the topics and audiences of the demonstrations, as well as whether they are located. A search of the databases can also be conducted from the FarmDemo platform: https://farmdemo.eu/hub/