A Stiletto Heel is a long, thin, high heel found on some boots and shoes.

It is named after the stiletto dagger, the phrase being primarily recorded in the early 1930s.^[1] Stiletto heels may vary in length from 2.5 centimetres (1 inch) to 25 cm (10 inches) or more if a platform sole is used, and are sometimes defined as having a diameter at the ground of less than 1 cm (slightly less than half an inch). Stiletto-style heels 5 cm (2.0 in) or shorter are called kitten heels.

Not all high slim heels merit the description stiletto. The extremely slender classic Italian-style stiletto heels of the late 1950s and very early 1960s were no more than 5 mm (0.20 in) in diameter for much of their length, although the heel sometimes flared out a little at the top-piece (tip). After their demise in the mid-late 1960s, such slender heels were hard to find until recently due to changes in the way heels were mass-produced.