Ellen Vesta Emery Hamlin (September 14, 1835 – February 1, 1925) was the second wife of Vice President Hannibal Hamlin who served in the first term of the administration of President Abraham Lincoln. They were married a year after the death of his first wife Sarah Jane Emery in 1855 who was also her half-sister. She had two children with Hannibal Hamlin: Hannibal Emery, who later became the attorney general of Maine, and Frank. Hamlin also had four children from his first marriage: George Hamlin, Charles Hamlin, Cyrus Hamlin, and Sarah Hamlin Batchelder.