Study aimed to assess oral health knowledge, and reported practices among elderly with oral and dental problems. Design: Descriptive research design was used. Settings: This study was conducted in dental out-patients clinics of the General Assiut Hospital & the El-Eman General Hospital Quota sample was used to select elderly; the total number of sample was 1300 elderly. Tools: Three tools were used. Tool I: structured interview form. It includes socio-demographic characteristics, medical and oral health history, Tool II: to assess elderly oral health knowledge, it includes 20 questions. Tool III: it includes three parts (reported practice about tooth brushing, reported practice about general oral health care and brief oral health status examination. Results: The main results of study showed that total percent of the studied elderly had unsatisfactory knowledge and the vast majority of the studied elderly had inadequate reported practice about tooth brushing. Also it was noticed that more than one third of elderly never clean their mouth, while more than half had unhealthy oral state. Conclusion: The total percent and the vast majority of the studied elderly had unsatisfactory knowledge about oral health and inadequate practice about tooth brushing respectively. Recommendations: Providing health education program to the elderly people about oral health to improve their knowledge and practice.