Jacob Welsh Miller (born August 29, 1800) was a Whig politician who represented the state of New Jersey in the United States Senate. A member of the Whig Party, he served as a senator from May 31, 1841, to March 3, 1853, completing two terms in office. During this period, he was part of the national legislature in the decades leading up to the American Civil War, when the Whig Party was a major force in U.S. politics.

Miller’s tenure as a senator from New Jersey lasted twelve years, reflecting sustained support for his service in the federal government. Although specific committee assignments, legislative initiatives, or additional offices are not listed in the available record, his role as a long-serving Whig senator places him among the notable historical members of Congress from New Jersey in the mid-nineteenth century.