This research aimed at examining the effect of promotion variable and product toward the interest of santri (students of Islamic Boarding Schools) at PP Ali MaksumKrapyak Yogyakarta to save. The type of the research is quantitative. The samples were all male santri of MA Ali MaksumKrapyak Yogyakarta. The samples were male santri who had not been interested in saving at Yogyakarta Branch of Bank MandiriSyariah. The total number of respondents was 100. The analysis tool used was doubled linear regression. Based on the analysis of doubled linear regression, it was concluded in this research that: 1) Promotion variable had positive and significant effect toward the interest of PP Ali MaksumKrapyak Yogyakarta santri to save, 2) Product variable had positive and significant effect toward the variable of the interest of PP Ali MaksumKrapyak Yogyakarta santri to save.