Botsfengselet is a former national prison for long-term prisoners in Oslo, Norway. It was designed by architect Heinrich Ernst Schirmer and came into use from 1851. Its location is at the former Åkebergløkka, Grønlandsleiret 41. In 1970 Ullersmo Prison took over as a prison for long-term prisoners in Norway, while Botsfengselet was rehabilitated and served as a department of the district prison in Oslo (Norwegian: Oslo Kretsfengsel) from 1975 (See Oslo Prison). The prison is listed as a protected site.