It's a much awaited addition to retail in the town after the closure of the joint Toyworld, Mensland and Sportspower store earlier this year.

Intersport co-director Bronte Tentye said the store had an unannounced opening on Monday before the official unveiling on Tuesday morning.

Mr Tentye said Katherine residents have been supportive of the town's new addition.

"It's been outstanding, even from early days, just the amount of social media engagement we get on our platforms compared to Darwin," he said.

"People are really keen for us to come down."

He said Intersport is committed to employing local people as staff and becoming part of the community.

"We've invested in the town, we've bought this building, we've bought a house my business partner lives here, he's moving his whole family here," he said.

"So we're here to stay and we're here to be a part of the community we're not just here to run a business from Darwin."

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