OBJECTIVE To investigate the prognostic value of combined serum carcinoembryonic antigen (CEA) levels and fibrinogen/albumin ratio (FAR) in patients with resectable gastric cancer (GC). BACKGROUND This retrospective study evaluated the CEA, fibrinogen, and albumin levels and other clinicopathological features of GC patients. The prognostic significance of these factors for overall survival (OS) was assessed using Kaplan-Meier curves and univariate and multivariate Cox proportional models. METHODS A total of 267 patients were included. The optimal cutoff values of CEA and FAR were 3.2 ng/mL and 0.086, respectively. Patients were stratified into three groups based on this cutoff value: CEA-FAR=0 (CEA <3.2 ng/mL and FAR <0.086), CEA-FAR=1 (CEA ≥3.2 ng/mL or FAR ≥0.086), and CEA-FAR=2 (CEA ≥3.2 ng/mL and FAR ≥0.086). RESULTS Higher CEA-FAR was strongly associated with age, tumor size, tumor invasion, lymph node status, and TNM stage (all P<0.05). The OS rates differed significantly between these 3 groups (88.9% vs 65.0% vs 46.9%, P<0.001). Multivariate analysis showed that CEA-FAR was an independent prognostic factor for OS (P<0.001). The area under the curve was larger for CEA-FAR than for either CEA or FAR alone (0.683, 0.644, and 0.669, respectively). CONCLUSIONS Preoperative CEA-FAR could be a potential blood marker for predicting tumor progression and the prognosis of GC patients. Patients with a higher CEA-FAR should undergo extensive follow-up.