The third season of the historical drama television series Vikings premiered on February 19, 2015 on History in Canada, and concluded on April 23, 2015, consisting of ten episodes.

The third season follows the development of Ragnar's family, and the Vikings as they become more entwined in English mingling affairs, and also begin to raid farther afield.

Morgan O'Sullivan, Sheila Hockin, Sherry Marsh, Alan Gasmer, James Flynn, John Weber, and Michael Hirst are credited as executive producers.

The featured tracks—which were not included in the soundtrack release—are "Helvegen", "Løyndomsriss", "Heimta Thurs", "Algir — Tognatale", "Rotlaust Tre Fell", "Sowelu", "IwaR", "IngwaR" and "Ár var alda".

The critical consensus reads: "Vikings continues its onslaught of engrossing action, intrigue, and characters, led by Michael Hirst's strong vision of Norse legend.