Tony the Tiger has been the mascot of Frosted Flakes since its introduction. Tony is known for uttering the cereal's slogan: "They're Gr-r-reat!" (the "r"s in "Great" pronounced as drawn-out). Tony the Tiger was originally voiced by Dallas McKennon, but Thurl Ravenscroft voiced him for more than 50 years, until his death in 2005. Tony was later voiced (in Canada and the US) by former professional wrestling play-by-play announcer Lee Marshall until his passing on April 27, 2014. Van Horne also voiced Tony in a 1997 television commercial. In the UK, Tom Hill voiced Tony after Ravenscroft's death. Tony is drawn wearing a red bandana on all Frosted Flakes cereal boxes.
Kellogg's was a major sponsor of Adventures of Superman throughout most of the 1950s. Many of the Frosted Flakes commercials featuring the show's star George Reeves are available on the DVD release of the series' first season.
Frosties is a sponsor of Challenger Sports British Soccer Camps.
From the mid 1990s to the mid 2000s, Frosted Flakes was a sponsor of children's programming on PBS.