The Whitney family is a prominent American family descended from non-Norman English immigrant John Whitney (1592–1673), who left London in 1635 and settled in Watertown, Massachusetts. The historic family mansion in Watertown, known as The Elms, was built for the Whitneys in 1710. The Whitneys today continue to be involved in philanthropic efforts due to the wealth accumulated by past generations. They are also members of the Episcopal Church. Until the mid-20th century, successive generations of the Whitney family had a significant impact on American history. Eli Whitney's invention of the cotton gin in 1793 enabled cotton seeds to be removed 50 times faster, a breakthrough which led the country to become home to 75% of the world's cotton supply. This caused the demand for slaves to increase rapidly, with Yale law professor Paul Finkleman writing that "slaves were a profitable investment before the cotton gin and an even more profitable investment after its invention". In 1844, Asa Whitney launched a campaign for a railway linking the country's west to the east that ultimately resulted in the first transcontinental railroad. Upon taking office as U.S. Secretary of the Navy in 1885, William Collins Whitney oversaw the American fleet's widespread adoption of steel ships, an event essential to the United States becoming a leading world power. During the 20th century, family members continued to exercise massive influence over the country's economy through conglomerates such as Pan Am, J.H. Whitney & Company, and Freeport-McMoran. Beginning with William Collins Whitney, members of the Whitney family would also become major figures for more than a century in the breeding and racing of Thoroughbred horses.

Prominent descendants of John Whitney

**By marriage: **

Descendants of James Scollay Whitney

Family network

Associates

The following is a list of figures closely aligned or subordinate to the Whitney family.

Businesses

The following is a list of companies in which the Whitney family have held a controlling or otherwise substantial interest.

Philanthropy and non-profit organizations

Buildings, estates and historic sites