Hannibal Emery Hamlin (August 22, 1858 – March 6, 1938) was an American lawyer and politician from Maine.

[1] His father, Hannibal Hamlin, served as Vice President of the United States from 1861 to 1865.

Hamlin grew up in Bangor, Maine and graduated from Colby College in 1879 and Boston University School of Law in 1882.

In 1883 he joined Senator Eugene Hale to create Hale & Hamlin, a law firm based in Ellsworth, Maine that still exists today and is recognized as the oldest law firm in the State of Maine.

He later served as the president of the Maine State Bar Association from 1923 to 1924.