Organizational culture is one of the essential topics in organizational behavior because of its role in determining the behavior of organizations and guests simultaneously. The researchers focused on describing the meaning of culture in general and administrative culture in particular to study values, beliefs, and other social variables to demonstrate their relationship to individuals. The group gives the ability to innovate, develop, and deal with internal and external problems. It works to build confidence and deal with those problems with awareness and feeling that give the group the vital role it plays in achieving the organization's goals. The research problem is (Does the organizational culture affect the behavior of the group in the hotel organizations?), As for its importance, it is to enhance the ability of the hotel to develop the culture of workers continuously by developing clear strategies to review environmental changes, and it aims to influence the behavior of the group (workers) in the hotel to improve and build Their cultures in the organization and in line with the developments taking place in the world. The analytical descriptive approach was adopted to analyze the sample’s responses to the questionnaire paragraphs. The research community was represented by the employees of the Mansour Hotel in Baghdad, where (35) questionnaires were distributed and were intentional. The statistical methods used were the stability test, the Cronbach coefficient, simple linear regression Multiple, Pearson's coefficient, the F test, the coefficient of determination, and percentages using the program (SPSS V.24). Many conclusions were reached, the most important of which are: There is a statistically significant relationship between (organizational culture) and (group behavior) according to the answers of the research sample. The most important recommendations are: Encouraging the development of collective behavior because of its apparent impact on hotel workers and increasing their organizational culture.