The study aimed to investigate the determinants of pharmacy postgraduates’ satisfaction to suggest essential recommendations to enhance educational quality at Hanoi University of Pharmacy in Vietnam. A cross-sectional survey was conducted among 202 postgraduates using structured questionnaires, with 31 multidimensional questions and 1 question addressing overall satisfaction. Cronbach’s alpha was used to evaluate the questionnaire’s internal consistency, Exploratory Factor Analysis (EFA) identified key factors, and multiple linear regression analysis was applied to assess the impact of these factors. Overall satisfaction had a high mean score of 4.49 out of 5 (SD = 0.602). The final 29 questions were retained and divided into four main factors affecting satisfaction after rotating EFA. The dimension of “Support and Evaluation” was the most influential factor (β = 0.475), followed by “Training Organization”, “Facilities and Library”, and “Lecturers and Curriculum”. The variables with the lowest scores needed much more attention, including digital systems (4.2, SD = 0.852), information technology support (4.32, SD = 0.772), activities boosting lifelong learning skills (4.48, SD = 0.624), and the reasonability of the education program’s structure (4.48, SD = 0.608) and the studying program’s schedule (4.45, SD = 0.607). The findings indicate the issues that should be addressed, and have highlighted that improvements in electronic library accessibility and updated curricula are also recommended to further optimize the educational experience of postgraduate students.