Khahan Na-Nan, Phithagorn Thanitbenjasith, Ekkasitsanamthong , Peerapong Pukkeeree, The Relationship Between Organizational Cultures and Courageous Followership Behaviors: What’s the Relationship and Why Does it Matter?, International Business Management, Volume 10,Issue 18, 2016, Pages 4384-4390, ISSN 1993-5250, ibm.2016.4384.4390, (https://makhillpublications.co/view-article.php?doi=ibm.2016.4384.4390) Abstract: This research aims to examine the relationship between organizational cultures and courageous followership behaviors. Total 399 operations employees from automotive components manufacturer in Nava-Nakorn Industrial Estate were deployed as samples in this research. The content validity questionnaire, with Index of Item-Objective Congruence (IOC) between 0.6-1 and Reliability Index between 0.654-0.937 was utilized. The Descriptive Statistics and Pearson Correlation techniques were used in data analysis to examine the relationship between the variables. The results showed that the opinion of the respondents on organizational cultures, with an average score between 3.669- 4.303, by which; the hierarchy culture produced the highest average score and clan culture was ranked at the lowest. The opinion on the followership with an average score between 3.864-4.234; the highest score derived from the ‘Courage to work at high moral’ where the ‘courage to oppose the superior’ was the lowest. The analysis revealed that the relationship among hierarchy, market, clan and adhocracy cultures to the followership behaviors in context of individual accountability, courage to oppose to the superior, courage to involve in the change of the organization and courage to work at high moral, ranged in between 0.267- 0.505 with statistically significant of 0.05 level. Keywords: Organizational cultures;courageous followership behaviors;content validity;average score;courage