Frosted Flakes or Frosties is a breakfast cereal, produced by WK Kellogg Co for the United States, Canada, and Caribbean markets and by Kellanova for the rest of the world, and consisting of sugar-coated corn flakes. It was introduced in the United States, in 1952, as "Sugar Frosted Flakes". The word "sugar" was dropped from the name in 1983.

WK Kellogg Co. is an American food manufacturing company, split from Kellogg's on October 2, 2023 and is headquartered in Battle Creek, Michigan. It was formed in October 2023 as part of Kellogg's hive-off of its North American cereal business.