Johannes Hassebroek (11 July 1910 in Halle, Saxony-Anhalt – 17 April 1977 in Westerstede) was a German Schutzstaffel (SS) officer and Nazi concentration camp commandant.
In May 2004, the European Championship was shot in Westerstede, Germany.
Wolfgang Hackbusch (born 24 October 1948 in Westerstede, Lower Saxony) is a German mathematician, known for his pioneering research in multigrid methods and later hierarchical matrices, a concept generalizing the fast multipole method.