Adam of Bremen (Latin: Adamus Bremensis; German: Adam von Bremen) (before 1050 – 12 October 1081/1085) was a German medieval chronicler. He lived and worked in the second half of the eleventh century. Adam is most famous for his chronicle Gesta Hammaburgensis ecclesiae pontificum (Deeds of Bishops of the Hamburg Church). He was "one of the foremost historians and early ethnographers of the medieval period".