Golden Nugget Online Gaming has agreed a deal with the Keweenaw Bay Indian Community and Ojibwa Casino to offer online casino in Michigan.
The news adds to the current expansion of online casino within the US, with DraftKings having this week launched casino apps in Pennsylvania and West Virginia.
Golden Nugget Online Gaming, which recently announced it will go public, already offers casino in New Jersey and plans to enter the Pennsylvania market next.
The operator's onlin esportsbook will also be available in Michigan.
Thomas Winter, president of Golden Nugget Online Gaming, said: "Golden Nugget Online Gaming is thrilled to partner with the Ojibwa Casino to provide casino players in Michigan with a premium online casino and sportsbook experience."
Chris Swartz, Keweenaw Bay Indian Community president, said: "We are excited to partner with Golden Nugget to bring Online Casino and Sports betting to the state of Michigan.
"Working with a strong brand will be a perfect complement to our brand new casino in Marquette as well as our casino in Baraga."