This research aims to discuss determinant of farmers interest in using as-salam financing on sharia banking. This is a quantitative and qualitative descriptive research. The primary data sources of the research were questionnaires and interview obtained from the farmers in Bangunjiwo village, Kasihan, Bantul, meanwhile, the secondary data were in the form of questionnaires result used to test the hypothesis. The variables in this research is knowledge, promotion, location and interest. The sample of the research was 92 respondents. The results of this research show that the variables of knowledge, promotion, and location significantly and positively influence the farmers interest in using as-salam financing of sharia banking. This happens because the farmers in Bangunjiwo village, Kasihan, Bantul have no sufficient knowledge about sharia banking and as-salam financing. They have never received any socialization or promotion from sharia banks. In addition, the distance of their house to the office of sharia banks is very far and difficult to reach.