This senior thesis, with the title “Single Parent & Homeless”, deals with the causes and effects of homelessness on single mothers. First the different terms, like “homelessness” and “single parent” will be explained. With the question which causes are responsible for homelessness or for single parenting, different areas are examined to create an understanding for the realization of this life form. Beside the causes, the effects, which are found in the different levels, form the main part of the work. In addition to the theoretical discussion with this subject, a small overview of the situation in Austria or Vienna will be given, while also the offers of the Viennese Assistance to the Homeless will be explained.