Introduction: Organizational resources are the effective valuable resources in achieving organizational goals and predictors of interaction. This study aimed to find out the organizational resources affecting nursing inter-professional collaboration. Method: This qualitative study was carried out with 23 nurses from hospitals of Tehran، Tabriz، and Ilam cities، Iran. Purposive sampling was applied to select the participants. In-depth and unstructured interviews and field notes were used to collect the data. Interviews were transcribed and simultaneously analyzed using conventional content analysis method. Results: Three categories of "physical resource"، "financial resource"، and "human resource" described the characteristics of organizational resources based on participant experiences. Conclusion: Organizational resources are the effective factors on nurse's inter-professional collaboration which include the supply and allocation of resources in different areas. Solving problems in this field can have positive effects.