Ōsama-tachi no Viking (Japanese: 王様達のヴァイキング, Hepburn: Ōsama-tachi no Vaikingu, "King's Viking") is a Japanese manga series written and illustrated by Sadayasu, with collaboration from Makoto Fukami.

It was serialized in Shogakukan's seinen manga magazine Weekly Big Comic Spirits from March 2013 to August 2019, with its chapters collected in nineteen tankōbon volumes.

Written and illustrated by Sadayasu, with collaboration from Makoto Fukami, Ōsama-tachi no Viking was serialized in Shogakukan's seinen manga magazine Weekly Big Comic Spirits from March 4, 2013,[1][2] to August 26, 2019.

[3][4] Shogakukan collected is chapters in nineteen tankōbon volumes, released from June 28, 2013,[5] to September 30, 2019.

[6] Ōsama-tachi no Viking was one of the Jury Recommended Works at the 18th Japan Media Arts Festival in 2014.