Nance Dicciani (born 1947) is an American chemical engineer. She contributed significantly to the development of ultrasonic scanners for examining pregnant women with her doctoral dissertation, "Ultrasonically-Enhanced Diffusion of Macro Molecules in Gels." Her experience in chemistry and business have resulted in her achieving top positions in several companies, most recently , a strategic business group of Honeywell. Forbes magazine has ranked her as one of The World's 100 Most Powerful Women.