Nikki Charm (born Shannon Louise Eaves on February 21, 1966 in southern California) is a former adult film actress. Her performances earned her nicknames such as "Naughty Nikki Charm" and "Nasty Nikki Charm".

At just 4' 11" and weighing less than one hundred pounds, Eaves was often cast as the innocent waif (which, in particular, appealed to those who enjoyed watching sex scenes with young starlets portraying "underage" girls having their first sexual experience), although she could ably play the aggressor as well. But Nikki Charm became infamous for her amazing flexibility during sex scenes. Arguably, Charm's ability to contort her tiny, lithe frame into amazing sexual positions (as well as a propensity for dirty talk and an outrageous sense of humor) made her a star. Nikki Charm was a "spinner", adult film parlance for very tiny women who can mount a man and literally be spun around.

After filming a scene for her debut adult film, "Young and Naughty", a producer reportedly said "Look out Ginger!" (in reference to porn legend Ginger Lynn, who was near the height of her popularity at the time). Along with Lynn, Charm is a member of the Adult Video News Hall of Fame.

In light of Traci Lords' revelation that she was underage during the majority of her adult film career (in fact, she only made one "legal" film), the very youthful-looking Eaves was herself confronted with accusations and rumors that she was likewise "illegal". However, she was able to prove that she, in fact, had made her first adult film soon after her eighteenth birthday and was therefore able to legally appear in pornographic movies.

Between 1984 and 1990, she appeared in nearly fifty videos. However, after 1990, Eaves appeared very sporadically, and some time in the mid-1990's, became a featured exotic dancer. As is customary in the adult film industry, older footage was "recycled" for several years, especially in "best of" compilations, or inserted into newer films to attract fans.

At some unknown time, Eaves married and had two children.