Agriculture is one of the priority economic sectors, because of the country’s favourable natural and climatic conditions. The object of article is to consider the main organization forms in Bulgarian agriculture private, family farms, large tenant farms and production cooperatives. At present, in the country there are some 1,7 million private agricultural farms with an average size of a farm about 1,45 ha. Regarding the average size of a farm, Bulgaria ranks almost last in Europe. About 2000, nearly 90% of cows, 95% of sheep, 90% of pigs and 95% of poultry are bred in the private farms. The small and middle bracket landowners associate into agricultural production cooperatives in order to make use of the large-scale production advantages. At this stage, the cooperatives face a number of problems: they have no the due equipment, their workers are advanced in age, the State does not support their activity. The developed during the late years tenant relations in the country contribute to the agricultural sector development.