Lisa Bonet age is 55 years old. Lisa Bonet is an American actress best known for her role as Denise Huxtable on the NBC sitcom The Cosby Show. Born in San Francisco, California to Arlene and Allen Bonet, Lisa was raised by her mother and stepfather after her parents divorced when she was a small child. She began acting at a young age, appearing in commercials before landing a part on the daytime soap opera A Different World. In 1987 Lisa landed the role of Denise Huxtable which made her an instant star; she received multiple Emmy Award nominations for this role throughout its run from 1984-1992.