The supermarket accounted for the sale of one in four home-grown apples bought in the UK, after a challenging growing season which resulted in significantly more scarred fruit.
It also claims to have sold the widest range of varieties of any UK retailer, with 63, the most popular being Gala, of which is sold 8,000 tonnes.
Sainsbury's apples and pear technologist Dr Theresa Huxley said: "Being number one for the fifth consecutive year is a fantastic achievement and one we have all worked incredibly hard for.
"Our customers want to buy home grown so we are already busy preparing for the new season by getting out in the orchards to discuss how we can make the most of British produce next season."
English Apples and Pears chief executive Adrian Barlow said: "It’s been a challenging season and Sainsbury’s results have been absolutely outstanding."