Melvin Ohio Adams (November 7, 1850 – August 9, 1920) was an American attorney and railroad executive who was part of Lizzie Borden's legal defense team, the United States Attorney for the District of Massachusetts from 1905 to 1906, and the president of the Boston, Revere Beach and Lynn Railroad.

[3] In 1892, Adams was retained by Andrew V. Jennings to serve as the associate defense counsel for Lizzie Borden, a Fall River, Massachusetts woman accused of killing her father and stepmother with a hatchet.

[5][6] An active member of the Massachusetts Republican Party, Adams served on the staff of Governor John Q.

[7] In 1905, Adams was appointed by President Theodore Roosevelt to serve as the United States Attorney for the District of Massachusetts.

[8] In 1890, Adams joined the Boston, Revere Beach and Lynn Railroad as a director and general counsel.