Sigtrygg (Sigtryggr) is an Old Norse given name, composed of the elements sig 'victory' and trygg 'trusty, true'.
It is cognate with the Anglo-Saxon Sihtric.
In Norse-Gaelic Ireland (9th to 11th centuries) rendered as Sitric or Sihtric (the patronymic Sigtryggsson as mac Sitriuc).
The name is only rarely given in modern Scandinavian countries; it is mostly encountered in Iceland, in the form Sigtryggur, with 99 entries for the name in the Icelandic white pages as of 2013.
[1] The names may refer to any of the following people: