Achalasia is uncommon in morbidly obese patients. We report two patients with both conditions. A 71 years old diabetic male with a body mass index (BMI) of 36 kg/m(2). He consulted for dysphagia and a manometry, showed a lack of relaxation of the lower esophageal sphincter. He was subjected to unsuccessful pneumatic dilatations in two occasions. Finally the patient was subjected to a total gastrectomy and Roux en Y esophago-jejunal anastomosis. Eight months after surgery the patient reports slight dysphagia and lost 24 kg. A 66 years old male with a BMI of 44 kg/m(2) consulting for regurgitation. Manometry confirmed the diagnosis of achalasia. The patient was subjected to a esophagomyotomy, subtotal gastrectomy and Roux en Y gastro jejunal and jejuno-jejunal anastomosis. Two years after surgery the patient had a slight dysphagia and lost 20 kg.