thumb|A large chocolate Frosty
The Frosty is a frozen dairy dessert of the American fast-food restaurant chain Wendy's. The Frosty was among the first five items introduced on the Wendy's menu.
Wendy's founder Dave Thomas created the original "light chocolate" Frosty according to a recipe from Fred Kappus by combining chocolate and vanilla flavors, as he thought that a pure chocolate flavor would overwhelm the taste of the restaurant's hamburgers. Thomas based the Frosty on the milkshakes he drank in Detroit as a youth, and created the Frosty to be thick enough to require a spoon to eat.
For both summer 2022 and summer 2023, the vanilla Frosty was temporarily replaced with a strawberry Frosty.
In November 2022, Wendy's released the new peppermint Frosty for the holidays; this was the third new Frosty flavor released and temporarily replaced the vanilla Frosty.
For spring 2024, an orange dreamsicle Frosty was introduced.
For summer 2024, a triple berry Frosty was introduced.
In fall 2024, a "pineapple under the sea" Frosty was released in honor of the 25th anniversary of SpongeBob SquarePants. This was followed by a "salted caramel" frosty in November.
On April 15, 2025, Wendy's introduced Frosty Swirls, where customers could choose to add caramel, strawberry, or brownie batter to their vanilla or chocolate Frosty. Less than a month later, on May 12, 2025, Wendy's introduced Frosty Fusions. Fusion flavors included Pop-Tarts Strawberry, Oreo Brownie, and Caramel Crunch. Each of these could top a chocolate or vanilla Frosty, at that point giving customers a total of 14 different Frosty options.
On August 4th, 2025, Wendy's released the "Raven's Blood Frosty". This frosty came out for the Collaboration of the hit show, Wednesday. It was a frosty with either a chocolate or vanilla base with a black cherry syrup swirl.