Fiber One (marketed as Fibre One in the United Kingdom) is a brand of high-fiber breakfast cereal,[1] packaged nutritional bars, and baked food products owned by General Mills.

General Mills released a second version of the cereal called “Fiber One Honey Clusters” in 2005.

[2] In January 2014, General Mills released a high-protein granola version of the cereal under the name “Fiber One Protein”.

[3] This spin-off version of the cereal came in maple brown sugar and cranberry almond flavor varieties.

[2] In a 2011 survey of 50,000 consumers conducted by the Better Homes and Gardens Association, Fiber One’s 90 Calorie Chewy Bar released the year prior was voted the best new food product.