This study aims to analyze the influence of Islamic tourism on the word of mouth about tourism in West Sumatra. Respondents in this study are tourists who visit West Sumatra. This study used 345 respondents as the sample. The data analysis technique of this study is multiple linear regression analysis. The results showed that Islamic facilities, halalness, alcoholic drinks and gambling free have positive and significant effect on word of mouth. Meanwhile, Islamic culture has insignificant effect on word of mouth about tourism in West Sumatra. Furthermore, some limitations and future study are discussed