Introduction Paraoesophageal hernias (PEH) are often symptomatic and can lead to life-threatening complications such as volvulus and ischaemia. Dyspnoea is one of the most prevalent symptoms of giant hiatus herniae. The primary outcome of this study is resolution of dyspnoea following composite repair of giant paraoesophageal hernia. Secondary outcomes include complications of surgery, hernia recurrence rates and effect of recurrence on dyspnoea. Methods Data were extracted from a prospectively maintained single-surgeon database containing records of all patients undergoing composite repair of paraoesophageal hernia. Patients presenting with dyspnoea who underwent composite laparoscopic repair of giant (>30% of stomach above diaphragm) paraoesophageal hernia between March 2009 and December 2015 were included. Results Inclusion criteria were met by 154 patients. The mean age at time of surgery was 71.2 years (range 49–93, SD 9.66) with an average BMI of 28 (range 19–38kg/m2, SD 4.1). On average hernia contained 64% of stomach (range 30–100%, SD 20.2). One procedure was converted to laparotomy. Surgery resulted in near complete resolution of dyspnoea (2.6% postoperatively, p<0.001). Recurrence rate was 24% and was not associated with persistent dyspnoea. There was one death and two significant complications. Conclusion Dyspnoea resolves following laparoscopic repair of giant paraoesophageal hernia. The presence of dyspnoea in patients with known large paraoesophageal hernia should be regarded as an indication for referral to a surgical service with expertise in hiatal hernia management.