Lajas Adentro is a corregimiento located in the San Félix District of the Chiriquí Province in Panama. It was officially established by Law 10 on March 7, 1997, with subsequent legislative measures provided by Law 5 on January 19, 1998, and Law 69 on October 28, 1998.
The area covers a total land size of 19.6 square kilometres (7.6 sq mi). According to the 2010 census, Lajas Adentro had a population of 741 residents, resulting in a population density of approximately 37.9 inhabitants per square kilometre (98/sq mi).