The move, prompted by a successful meet the buyer event with regional suppliers, will take the retailer's total range of branded and own label Scottish products to more than 20,000 lines.
"Our aim is to have more Scots products in store than any other retailer," said James Laws, commercial manager for Scotland. "Scotland is also a major growth opportunity with our market share having grown 10% in the past year."
Twenty-six new suppliers have been signed up.
The push will be backed by an information booklet on Sainsbury's and its suppliers, which is due to be sent to more than 600,000 households.