Polly-O is an American brand of cheese products, currently owned by BelGioioso Cheese Inc. The original Polly-O manufacturing company had been established in 1899, operating independently until it was acquired by Kraft Foods Inc. in 1986. Kraft owned it until 2020, when it sold its natural cheese division to Groupe Lactalis. In 2021, Groupe Lactalis entered into a purchase agreement with Belgioioso to sell Polly-O, as a requirement by the US Department of Justice's antitrust review of Lactalis's purchase from Kraft Heinz.