Lillian Lincoln Lambert is an American businesswoman, and the first African-American woman to graduate from Harvard Business School (HBS), where she was one of the co-founders of the African-American Student Union. She graduated in 1969 and received the W. E. B. Du Bois award. After holding down a number of different jobs she started her own building services company, Centennial One, in 1976. After she sold that, she engaged in public speaking and published a memoir.