Nemesis often refers to:

Nemesis (mythology), in Greek mythology, a spirit of divine retribution against those who succumb to hubris
Archenemy, the principal enemy of a character in a work of fiction
Nemesis may also refer to:

Burger Time is a regional chain of drive-through fast food restaurants that is headquartered in West Fargo, North Dakota. Its original restaurant was founded in Fargo, North Dakota, in 1987 and currently has eight locations in North Dakota, Minnesota and in Sioux Falls, South Dakota.

A vigilante (/ˌvɪdʒɪˈlænti/, /ˌvɪdʒɪˈlænteɪ/; Spanish: [bixiˈlante]; Portuguese: [viʒiˈlɐ̃t(ɨ)], [viʒiˈlɐ̃tʃi]) is a civilian or organization acting in a law enforcement capacity (or in the pursuit of self-perceived justice) without legal authority.