Cornelius Vanderbilt (May 27, 1794 – January 4, 1877), nicknamed "the Commodore", was an American business magnate who built his wealth in railroads and shipping. After working with his father's business, Vanderbilt worked his way into leadership positions in the inland water trade and invested in the rapidly growing railroad industry, effectively transforming the geography of the United States.

As one of the richest Americans in history and wealthiest figures overall, Vanderbilt was the patriarch of the wealthy and influential Vanderbilt family. He provided the initial gift to found Vanderbilt University in Nashville, Tennessee. According to historian H. Roger Grant: "Contemporaries, too, often hated or feared Vanderbilt or at least considered him an unmannered brute. While Vanderbilt could be a rascal, combative and cunning, he was much more a builder than a wrecker [...] being honorable, shrewd, and hard-working."