The fourth season of the historical drama television series Vikings premiered on February 18, 2016 on History in Canada.

The series broadly follows the exploits of the legendary Viking chieftain Ragnar Lothbrok and his crew, and later those of his sons.

The season follows the battles between Ragnar and Rollo in Francia, Bjorn's raid into the Mediterranean, and the Viking invasion of England.

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

[11] An additional original song not included in the album is "Snake Pit Poetry", written by Einar Selvik and performed by Hilda Örvarsdóttir, and featured in "All His Angels".

The critical consensus reads: "Vikings returns for another season of fantastic performances, epic battles, and sharp writing sure to please its barbarous hordes of fans.