Malnutrition in gastrointestinal surgery is associated with poorer post-operative outcomes which may be mitigated by delivery of evidence-based nutrition care. This study reports on the development, implementation and evaluation of an evidence-based nutrition care pathway for lower gastrointestinal and pelvic cancer patients. A retrospective cohort study of 40 surgical lower gastrointestinal and pelvic cancer patients pre- and post-implementation of the pathway was conducted. Outcomes assessed were, care pathway adherence, weight change, time to post-operative commencement of nutrition, and post-operative length of stay. Post-implementation of the pathway there were significant improvements in the proportion of patients who received dietetic assessment and education pre-surgery (0% vs 55%, P < .001) at regular intervals during admission (35% vs. 90%, P < .001) and post-discharge (22.5% vs. 81.8%, P < .001). Mean weight change between admission and discharge reduced post-implementation (-3.5%, SD 4.7 vs, -5.6%, SD 4.7; P = 0.08). Post-operative length of stay remained similar (16 day, IQR 11-34.7 vs. 17.5 day, IQR 11.2-25; P = 0.71). Post-implementation a greater proportion of patients commenced oral or enteral nutrition within 24 h, post-operatively (75% vs. 57.5%, P = 0.1). The nutrition care pathway was an effective method for delivering evidence-based nutrition care, resulting in clinically but not statistically significant improvements in outcomes.