Urban morphology is a complex topic that can be defined in terms of its spatial relations, properties, and measures using several equations. There are types of urban morphology indicators UMIs to explore the spatial heterogeneity, guiding the spatial morphological design and build a correlation factor between the urban form and urban microclimate. Urban morphology indicators UMIs proposed several morphological correlations (numbers, dimensions, volumes, areas, orientations, and percentages) observed between the discrete elements of urban morphology to describe the built environment's morphology, geometry, and typology. UMIs are used in diverse fields of study. The generation of urban morphology is a complex process that includes several parameters. The collection and classification of generation parameters help architects and urban planners enhance the generation process. This study aims to introduce a classification of UMIs to be suitable for the generation process. The research assumes that the classification of UMIs is an essential process that helps in urban morphology generation. It presents a novel framework of classification of UMIs through the level of implantation in urban generation and the spatial relation between elements, four main categories of UMIs, which are concluded: Streets (UMIs), Building UMIs, plots UMIs, and Open spaces UMIs. Finally, the research will mention subcategories of each UMIs, besides the UMIs at each sub-category. S(UMIs) include connectivity, integration, choice, and permeability. P(UMIs) include Openness, compactness, and diversity. B(UMIs) include V/A, S/V, BDF, GSI, FSI, VHurb, FAI, and Hbuild. O(UMIS) include Po, Si, Oc, SVf, UCI, and Ru.