Zisa or Cisa is a goddess in Germanic paganism, the best documented version of which is that of 10th and 11th century Norse religion. Zisa is an etymological double of Tyr or Ziu according to 19th century scholar Jacob Grimm who suggests that Zisa may be the same figure as Tyr's unnamed wife, mentioned by Loki in the 13th century Poetic Edda poem Lokasenna.
Zisa is mentioned in manuscripts from the 12th to 14th centuries which reference a victory against the Roman Empire attributed to the goddess. The anniversary of this victory was celebrated on the festival day of September 28 and involved games and merrymaking.
Scholar Stephan Grundy, and authors Nigel Pennick and Prudence Jones,reference two Medieval manuscripts which mention Zisa, Codex Monac circa 1135 and Codex Emmeran circa 1135, along with a corroborating third source, Melchior Goldast's Suevicarum rerum scriptores. These three are based on a first-century BCE record of a Swabian military victory over Roman forces. The record mentions a city where the inhabitants worshipped Zisa "with extreme reverence". Pennick identifies this city as ancient Augsburg, and further identifies the depiction of the red-dressed woman in the Golden Hall of the Augsburg Town Hall as one of Zisa.
Grimm proposes a connection between Zisa and to the "Isis" of the Suebi attested by Tacitus in his 1st century CE work Germania based on the similarity of their names, if not their functions. Grimm also references a record of a pagan Duke of Swabia, Suevi in the area of Augsburg, Germany. Duke Esenerius established a chapel in his castle in Kempten (then known as Hillomondt) with a venerated image of Zisa.
- Grimm (1882:201—299)
- For Simek, see Simek (2007:52). For Stephan Grundy, see Grundy (1998:85). For Prudence Jones and Nigel Pennick, see Jones and Pennick (1995:160).
- Pennick (2002:107-108)
- Pennick (2002:109)
- Grimm, Jacob (James Steven Stallybrass Trans.) (1882). Teutonic Mythology: Translated from the Fourth Edition with Notes and Appendix by James Stallybrass Vol. I. London: George Bell and Sons.
- Grundy, Stephan (1998). "Freyja and Frigg" in Billington, Sandra, and Green, Miranda (1998). The Concept of the Goddess. Routledge. ISBN 0-415-19789-9
- Jones, Prudence. Pennick, Nigel (1995). A History of Pagan Europe. Routledge. ISBN 0-415-15804-4
- Pennick, Nigel (2002). "The Goddess Zisa" in TYR, vol. 1 (Ultra Press, 2002), pp. 107-110.