This paper aimed to examine whistleblowing in point of individual level. Three sets of hypotheses were developed concerning the relationships between (1) religiosity and ethical ideology, (2) ethical ideology and intentions to different modes of whistleblowing, and (3) religiosity and intentions to different modes of whistleblowing. Descriptive statistics, Correlation matrix, and regression analysis were used to analyze the data. The sample includes 323 teachers in Turkey. The results confirmed that religiosity was negatively associated with relativism, and positively associated with idealism while they rejected any relation between the ethical ideology and intention to whistleblowing modes. The results confirmed only the positive relationship between religiosity and internal whistleblowing, while rejecting the other hypotheses. Few studies have investigated the relationship between whistleblowing modes and ethical ideology. Therefore, examining religiosity, ethical ideology, and whistleblowing in an education context in Turkey, this paper believed to contribute the literature with regard to Islamic perspective.