Spice Williams-Crosby (born Marceline Ann Williams, April 26, 1952) is an American actress, with a career in film and television which spans more than 40 years.

Her more notable roles include the Klingon officer Vixis in Star Trek V: The Final Frontier, and the assassin Patrice in Buffy the Vampire Slayer story "What's My Line".

Originally involved in music and dance, she switched to acting, focusing on action roles which often featured stuntwork, making use of her martial arts and athletic skills.

She has also worked as a stunt coordinator, choreographing fight scenes for television and film, including Miller Lite's controversial 2002 commercial "Catfight".

She is a PhD, sixth-degree blackbelt, a vegan, and has written a book and several articles on the subject.