Gillette is an unincorporated community and census-designated place (CDP)[5] in Long Hill Township, Morris County, New Jersey, United States.

[6] The area is served as United States Postal Service ZIP Code 07933.

[2] Gillette is in southern Morris County, in the eastern third of Long Hill Township.

Interstate 78 passes less than 2 miles (3 km) to the south of Gillette, with access from Exit 40, Hillcrest Road.

[1] The entire CDP is within the watershed of the Passaic River leading to Newark Bay.