James Adger (November 2, 1777–September 24, 1858) was an Irish-American merchant. He was born in County Antrim and emigrated to the United States with his family in 1793. He moved to Charleston, South Carolina, in 1802 and became "one of the wealthiest and most influential merchants of antebellum Charleston."[1] He partnered with Samuel Bones in Bones & Adger, a cotton buying business, and with James Black in Adger & Black, a trading company. He also established a hardware firm, James Adger & Company. One of his ships, the USS James Adger, was later pressed into service in the Union Navy during the American Civil War.