This study aimed to develop a valid and reliable measurement tool to enhance ethical evaluation literature. The tool consists of two subscales named "Bases of ethical evaluation," and "Grounds of ethical evaluation." In order to determine the factor structure of the scales, both exploratory and confirmatory factor analyses were applied. The results revealed that Ethical Evaluation Questionnaire is a valid and reliable scale. The results presented that there was a positive correlation between the factors and the total "Bases of ethical evaluation" scale. Similarly, there was a positive correlation between the factors and the total "Grounds of ethical evaluation" scale. Since the Ethical Evaluation Questionnaire is a valid and reliable scale, it can be generalized for the other professions. The instrument is developed with respect to Islam religion in Turkish culture. However, scholars and managers can use the instrument for different cultures and religions. While there have been many studies examining ethical decision-making with different factors, intentions for examining religiosity as an underlying reason for ethical evaluation has been inadequate. So, studying Muslims in Turkey, this study is supposed to contribute to the literature related to ethical ideology and religiosity with regard to Islamic perspective.