Weili Dai (simplified Chinese: 戴伟立; traditional Chinese: 戴偉立; pinyin: Dài Wěilì) is a Chinese-born American businesswoman. She is president and co-founder of Marvell Technology Group. Dai is considered one of the most successful women entrepreneurs, and is the only female co-founder of a major semiconductor company. As of 2015, she is listed as the 95th most powerful woman in the world by Forbes. Her estimated wealth is over $US1 billion.