Systems and methods are disclosed for visual definitions of data associations. In accordance with one implementation, a method is provided for visual definitions of data associations. The method includes obtaining and displaying a first sample document, receiving a first input indicating selection of one or more objects within the first sample document, and determining a first set of one or more characteristics shared by the selected objects. The method also includes identifying, within one or more target documents, one or more target objects characterized by the first set of one or more characteristics, and storing object data associated with the target objects.