Stoigniew (died October 16, 955) was an Obotrite leader, who reigned during the middle of the tenth century.
He is mentioned as a member of the princely Nakonid dynasty in the medieval chronicles of Thietmar of Merseburg and Widukind of Corvey.
Widukind, in his Res gestae Saxonicae about 70 years earlier, mentioned a princeps barbarorum as Nakon's brother, though without giving his name.
Both ruled over large territories of the Polabian Slavs, roughly corresponding to present-day Mecklenburg and the adjacent parts of Holstein up to the Elbe river.
An entry in the Annales Sangallenses maiores report that in October 955, Stoigniew led the united Slavic forces of Obotrite, Veleti, Circipani and Tollensians into the Battle on the Raxa against the East Frankish (German) king Otto I.