Crunchy Nut (previously known as "Crunchy Nut Corn Flakes" in the UK, and "Nut & Honey Crunch"/"Honey & Nut Corn Flakes" in the US) is a breakfast cereal made by Kellogg's with flakes of corn, honey, three types of sugar, and chopped peanuts. The product was created by Kellogg's employees at their Trafford Park factory in Greater Manchester and first introduced in 1980.

While always known as Crunchy Nut or Crunchy Nut Corn Flakes in the UK, the cereal has undergone several name changes in the US. It debuted as Honey & Nut Corn Flakes, followed by the minor variation Honey-Nut Corn Flakes. The name changed to Nut & Honey Crunch in 1987 with a memorable ad campaign centered around the "nuttin', honey" pun. In the late '90s, it became Honey Crunch Corn Flakes. Despite this history, a 2011 UK press release announced Crunchy Nut's introduction to the US.