THE PROTECTION OF INTRA AND EXTRA-URBAN PRODUCTIVE AGRICULTURE IS ONE OF THE MAIN CHALLENGES OF REGIONAL PLANNING TODAY. THIS ARTICLE QUESTIONS HOW CHILEAN URBAN PLANNING, WHICH IS BOUND WITHIN THE URBAN LIMITS, HAS CONCEIVED PRODUCTIVE AGRICULTURE OVER TIME. TO REACH THIS GOAL, WE CONDUCT A DESCRIPTIVE AND INTERPRETATIVE ANALYSIS ON THE EVOLUTION OF REGIONAL PLANNING TOOLS FOR FIVE CHILEAN CASES WHERE URBAN AGRICULTURE HAS BEEN PROTECTED, IDENTIFYING THE METHODS AND ARGUMENTS. THE RESULTS SHOW THAT, ALTHOUGH AGRICULTURE WAS CONCEIVED AS AN URBAN USE AT THE LOCAL LEVEL, THE CHANGES IN CHILEAN LEGISLATION HAVE LED TO CONCEIVING THIS ACTIVITY AS TEMPORARY AND FALLOW, FOR ITS INEVITABLE TRANSFORMATION INTO OTHER MORE PROFITABLE URBAN USES.