BackgroundEndometrioid carcinoma, originating in the endometrium glandular cells, is often detected early and treated by surgery. However, post‐treatment life quality remains poorly studied, explicitly focusing on sleep quality, fatigue, and depression.MethodsIn this cross‐sectional, observational study, 147 female patients with endometrioid‐type endometrial carcinoma were evaluated using standardised tools—Pittsburgh Sleep Quality Index (PSQI), Fatigue Assessment Scale (FAS), and Beck Depression Inventory (BDI). Patients were categorised based on sleep quality and depression levels. The study employed correlation and regression analyses to examine the relationships among these variables.ResultsNo correlations were found between sociodemographic or lifestyle variables and sleep quality, fatigue, or depression (P > 0.05). A strong correlation was identified between PSQI and FAS (r = 0.623; P < 0.001), PSQI and BDI (r = 0.291; P < 0.001), and FAS and BDI (r = 0.413; P < 0.001). Fatigue and tumour grade were potential predictors of poor sleep. Sleep quality and depression predicted fatigue, while only fatigue was a predictor for depression. Radiotherapy and external radiation rates were notably higher in the mild depression group.ConclusionsOur study suggests an imperative for integrated multi‐disciplinary approaches that focus on medical and psychological aspects of patient care to enhance long‐term well‐being and quality of life.