Background: Hand hygiene is one of the simplest and most important ways to prevent nosocomial infections. However, the available evidence indicates that hand hygiene is not fully practiced by healthcare workers. Several factors affect hand hygiene. Therefore, this study aimed to explain the experiences of healthcare workers in the barriers to hand hygiene compliance in intensive care units.Methods: This qualitative study was performed on 25 doctors, anesthesiologists, nurses and physiotherapists working in intensive care units by using purposive sampling and semi-structured individual interviews. The data analysis process was performed with Lundman and Graneheim approach.Results: The main theme of “barriers to hand hygiene practice” with three main categories, including 1- barriers related to healthcare providers with subcategories of workload, insufficient knowledge, inappropriate attitude and wrong behavioral patterns, 2- barriers related to management with the subcategories of improper planning and training, improper design of the physical space of the department and 3- barriers related to equipment and facilities with the subcategories of lack of equipment and poor quality equipment were identified in this study.Conclusion: The results of the present study can help the relevant authorities in adopting appropriate strategies to remove barriers to hand hygiene practice and promote the right attitude and behavior in healthcare workers.