Llano Largo is a corregimiento located in the Los Santos District within the Los Santos Province of Panama. It serves as a local administrative division in the country's interior.
As of the 2010 census, Llano Largo had a population of 2,265 residents. Historical data indicates steady growth in the area over several decades, with recorded populations of 1,715 in 1990 and 2,003 in 2000.