Disability research is important for the individual and the family, but certainly also for the society that has to adapt and facilitate an easier life and better service for this segment of our populations. For example, research showed significant disparities in the prevalence of disability between urban and rural residents, which can guide society to provide better service. Epidemiology and survey research can be important tools for public health focus and intervention and guide policy makers to allocate budgets and service facilities and expertise. In this book, we have gathered research on various aspects of disability from Malaysia, India, Ghana, Kenya, Portugal, Bangladesh, Thailand and Nigeria, which we hope will be of interest to the reader.