The main objective of this study was to investigate farmer's perception toward the privatization of livestock extension services in Iran. The study was carried out through a survey method. The statistical universe of the study consisted all farmers who had at least one livestock unit and living in rural areas of the East Azarbaijan, Mazandaran, Golestan and Fars Provinces of Iran. To study the farmer's perception toward the privatization of livestock extension services and factors associated with that, a sample of 1200 farmers was selected by use of "multi-level stratified random sampling" method. A questionnaire was used to collect information about variables. The reliability and validity of the perception toward the privatization of livestock extension services Index were determined. Cronbach’s alpha computed to measure reliability of the index was 0.81. The data were analyzed using statistical methods such as frequencies, percentage, mean score, standard deviation, and product moment correlation analysis, F test, regression analysis and factor analysis. The findings of the study revealed that there was a significantly relationship between perception toward the privatization of livestock extension services and independent variables consisting: age, educational level, level of agricultural production and level, income from agriculture. According to Multiple Regression Analysis 45 percent of the changes in farmer's perception toward the privatization of livestock extension services was due to their educational level, level of agricultural production, level of income from agriculture and level of income from livestock production.