This study analyzes the marketing ethics decision-making process of Thai managers. In particular, it examines the relative influences of ethical perceptions, religiosity, personal moral philosophies, and corporate ethical values on ethical intentions of managers in Thailand. Managers enrolled in executive MBA or special MBA programs from public and private universities throughout Thailand were selected as target respondents. The survey results generally indicate that both dimensions of moral philosophies, idealism and relativism, are significant predictors of a Thai manager''s ethical intention, as (...) hypothesized. The results also reveal that perceived ethical problem is a positive factor of a Thai manager''s ethical intention. The results generally support our hypothesis regarding the influence of corporate ethical values, that Thai managers in organizations with higher levels of ethical values tend to have a more ethical intention than the managers in organizations with lower levels of ethical values. The survey results regarding the influences of religiosity, however, are mixed. (shrink)