Sigulfr is a Scandinavian male personal name from Old Norse Sig- ‘victory’ and Old Norse -ulfr ‘wolf’. The name is possibly found in a Norwegian place-name and appears once in Jämtland (modern day Sweden) in 1347. The name is recorded in Sweden as runic sikulf and in the forms Sighulf, Sigell and possibly in the much contracted form Siel in Denmark.
Sigulfr is also the first element in the place-name Sileby, Leicestershire.
