Burhi Aair Sadhu or Burhi Aai'r Xaadhu (Assamese: বুঢ়ী আইৰ সাধু) (literally translated to Grand Mother's Tales) is a collection of stories or folklore, that have been compiled by famous Assamese author and poet Lakshminath Bezbaruah. It is one of the most popular texts in Assamese literature. This book was first published in October–November 1911. After the first publication 100 years have been passed and countless editions of the book have been published. This book is in now in the public domain as per copyright law of India.