Objectives: The aims of this study were to determine the average length of stay of patients who underwent surgical treatment of gastric cancer at General Hospital Nova Gradiška from 2009 to 2019. to research whether there is a difference in length of stay of patients between genders and to determine if there is a relation between length of stay and patients’ age. Study design: The study was organized as a cross-sectional study. Participants and methods: The research included patients found in surgical operative protocols of the General Hospital Nova Gradiška from 2009 to 2019. Using the data gathered form the surgical operative protocols and by analyzing medical data, the following variables were processed: age, gender and the length of hospitalization. Results: The research included 24 patients with median age of 74,5 years, with interquartile range 66 to 79 years ranging from 49 to 85 years. Median length of stay was 16 days with interquartile range 14 to 17 days ranging from 7 to maximum 35 days, without significant difference with regards to gender and age. Total gastrectomy was done in majority of the cases, and gastric cancer was commonly localized in distal part of gastric corpus. Conclusion: The average length of stay of patients who underwent surgical treatment of gastric cancer at General Hospital Nova Gradiška lasted 16 days, which is different from average length of stay noted in reviewed literature that tackled similar topics. Significant difference in length of stay with regards to gender was not recorded. Furthermore, the research did not find significant correlation between the length of stay and patients’ age.