The Fender Stratocaster, often referred to as "Strat", is a model of electric guitar designed by Leo Fender, George Fullerton, and Freddie Tavares in 1954, and manufactured continuously by the Fender Musical Instruments Corporation to the present. It is a double-cutaway guitar, with an extended top horn for balance while standing. Along with the Gibson Les Paul and the Fender Telecaster, it is one of the 'big three,' the most common and enduring models of electric guitar in the world.

The Stratocaster features three single coil pickups, with the output originally selected by a 3-way switch. Guitarists soon discovered that by jamming the switch in between the 1st and 2nd position, both the bridge and middle pickups could be selected, and similarly, the middle and neck pickups could be selected between the 2nd and 3rd position. This trick became widespread and Fender responded with the 5-way pickup selector (a standard feature since 1977) which allowed these tonal combinations and provided better switching stability; the "quacky" tone of the middle and bridge pickups, popularized by players such as David Gilmour, Rory Gallagher, Mark Knopfler, Bob Dylan, Scott Thurston, Eric Clapton and Robert Cray, can be obtained by using the pickup selector into positions 2 and 4.

In the 1970s and 1980s, some guitarists began modifying their Stratocasters with humbucking pickups, especially in the bridge position, to create what became known as a Fat Strat. This was intended to provide a thicker tone preferred in the heavier styles of hard rock and heavy metal. The popularity of this modification grew and eventually, Fender began manufacturing models with a bridge humbucker option (HSS), denoted and separated from the original triple single coil by the title of "Fat Strat", as a reference to the humbucker's distinct sound,