Embodiments of the present invention address deficiencies of the art in respect to MIDlet execution in a desktop environment and provide a method, system and computer program product for clip region definition for a MIDlet region space. In one embodiment of the invention, a method for clip region definition for a MIDlet region space can be provided. The method can include extracting a raster image from a MIDlet, computing a clip region from the extracted raster image for the MIDlet, deploying the MIDlet to a desktop environment through an emulator, and applying the clip region to the MIDlet through the emulator to deploy the MIDlet as a widgetized application in the desktop environment.