This chapter introduces a way for assessing and improving information quality at organizations. Information is one of the most important assets for today’s enterprises since it is the basis for organizational decisions. However, as information is produced from data, both data and information quality must be managed. Although many researches have proposed technical and managerial solutions to some specific information quality problems, an integrative framework which brings together these kinds of solutions is still lacking. Our proposal consists of a framework for assessing and improving information quality through the concept of Information Management Process (IMP). An IMP is assessed according to an information quality maturity model by using an assessment and improvement methodology. The framework provides a consistent roadway for coordinating efforts and resources to manage information quality with a strategic perspective. As an application example, a study case has been included in the chapter.