Thietmar

Thietmar may refer to:


 * Thietmar, Count of Merseburg (died 932)
 * Thietmar, Margrave of Meissen (died 979)
 * Thietmar of Prague (died 982), bishop
 * Thietmar of Merseburg (975–1018), bishop and chronicler
 * Thietmar, Margrave of the Saxon Ostmark (died 1030)
 * Thietmar of Minden, bishop (died 1206)
 * Thietmar (pilgrim), visited the Holy Land in 1217–1218