These would include mobile, broadband and more complex products, the company said in a statement on Tuesday.
The first of these hubs will be at the retailer's flagship store in Auburn, Sydney, and this will be followed by others, beginning with hubs in Toowoomba and Bundall on the Goal Coast.
"Connectivity is essential for any business and with many Harvey Norman stores already supporting small to large businesses we saw a fantastic opportunity to support SMBs with an expanded range of Optus SMB offerings into key Harvey Norman locations," said Optus SMB managing director Libby Roy.
"Customers will benefit from a specially curated range of products that deliver convenient solutions to help support their business.
"The launch of our first Optus Business Hub is an important part of our drive to deliver SMB customers with the convenience of visiting a retail location that can support your more complex requirements or alternatively have one of our SMB Specialists visit your business based on your availability."
After the Sydney hub, others are expected to be launched early in 2021.