Spatial Representations and Urban Planning by Gilberto Corso Pereira 1 & Maria Célia Furtado Rocha 2 Urban models are idealized representations of the city, abstractions or simplifications of reality that seek to describe the urban reality, predict or plan for the city future. Digital technologies allow both, reading and analysis of urban realities, and their communication between various social actors - citizens, organizations, corporations - enabling access and diverse use of information. Digital representations could be used to amplify public participation but they also allow the manipulation of public opinion. The paper argues that the digital representations currently used in Urban Planning derived from topographical data acquisition must be extended to represent the social networks that today augment the public space and the current Urban Planning practices could be closer to the current social practices and their representations. Urbanism and Digitization Cities are complex organizations, to plan and to manage its growth necessarily involves a series of diverse knowledge and use of sophisticated tools and processes. The idea of planning the growth or evolution of one city assumes that you can learn how to anticipate and avoid problems associated with its urban development. It also requires to know the needs and demands for public facilities or services - housing, transportation, sanitation, infrastructure, legislation, etc. - and ways to minimize or correct these deficiencies. In an increasingly urbanized world the complexity of variables that influence the analysis to be made increases as urban societies become more diverse and gain more mobility. Urban planning is a sophisticated instrument of political power because 1 Federal University of Bahia, Brazil. 2 Federal University of Bahia and PRODEB, Brazil 1