Boerhaave's syndrome is a very rare disease characterised by spontaneous rupture of the oesophagus. Clinical presentation is varied and may depend on the cause, location, size, degree of contamination, and site of injur y. Patients may present with abdominal pain, pneumothorax, hydropneumothorax, and pneumomediastinum. Tension pneumothorax after esophageal perforation has been rarely reported in the medical literature. In our report, a case of tension pneumothorax secondary to Boerhaave's syndrome in a 44-year-old male is presented here.