Czcibor (Latin: Cidebur; died after 972), a member of the Piast dynasty, was a Polan prince, son of Duke Siemomysł and younger brother of the first Christian ruler, Mieszko I of Poland.

According to E. Rymar (2005), Czcibor may have been a governor of the Pomeranian lands after Mieszko I's conquest of that West Slavic tribes territory from around 967 AD.

[1] In medieval sources, he is mentioned but once in the chronicles by Thietmar of Merseburg, in relationship with Poland's victorious Battle of Cedynia against the forces of the Saxon margrave Odo I (Hodo) in 972 AD.

Czibor's presence at Cedynia might have been based not only on his status as war leader and brother of the Polish ruler, but also by his position as 'governor' of conquered/annexed Pomerania.

At the site where, according to the research of archaeologist Władysław Filipowiak, the Battle of Cedynia most likely was fought, a hill is named Góra Czcibora ("Czcibor's Mountain").