FiveO

FiveO is a stylized name used as a label for different people, brands, and fictional entities. In slang, Five-O is a common reference to police officers or police activity in North American English. The term is widely associated with the Hawaii Five-O television series (the original run aired 1968–1980), which helped popularize the nickname and its police connotations. Variants such as Five-O, Five-0, and FiveO appear in media and branding, sometimes to evoke authority, surveillance, or speed.

In media and branding, FiveO functions as a proper name or logo for bands, clothing lines, video games, and other consumer products. Because it is not tied to a single organization, its meaning is determined by context: it may signal a policing motif, a musical act, or a fictional group within a work of fiction. The lack of a single canonical referent means readers should rely on surrounding information to interpret a particular usage.

Origin and variations: The association with police predates contemporary media but was reinforced by Hawaii Five-O. Different spellings reflect branding choices: Five-O with a letter O, Five-0 with a digit zero, or FiveO as a continuous word. See also Hawaii Five-O and Hawaii Five-0 for related uses stemming from the original series and its influence.