| Milane Duncan Frantz | |
| Birth Name: | Milane Diane Duncan |
| Nationality: | American |
| Education: | University of Houston |
| Father: | Dan Duncan |
| Mother: | Barbara Ann Duncan |
Milane Diane Frantz (née Duncan, born 1970) is a billionaire heir to the Duncan family fortune through Enterprise Products, which remains under family control.
Milane Frantz was born in 1970 to Barbara Ann and Dan Duncan.[1] Her father, Dan Duncan, was the co-founder of Enterprise Products.[2]
Frantz is an investor. She inherited $3.1B upon the death of her father.[3] Due to a temporary repeal in the estate tax law for the year 2010, Duncan's children became the first American billionaires to pay no estate tax since its enactment.[4] Frantz's net worth is $4.3 billion, as of April 2020.[5]
On July 28, 2001, she married Matthew J. Frantz, the son of Philip and Judy (Erhardt) Frantz.[6] He died on September 4, 2014, aged 45.[6] She lives in Houston, Texas.[5]