John Joseph Mitchell (May 9, 1873 – September 13, 1925) was a lawyer and U.S. Representative from Massachusetts.

Mitchell was born in Marlborough, Massachusetts, on May 9, 1873. He attended public schools, Boston College, and the Albany Law School. Mitchell was admitted to the bar and commenced practice in Marlborough. He was elected a member of the Massachusetts House of Representatives, and served in the Massachusetts State Senate.

Mitchell was elected as a Democrat to the 61st United States Congress to fill the vacancy caused by the death of Charles Q. Tirrell, serving from November 8, 1910, to March 3, 1911. However, he lost a simultaneous election to the 62nd United States Congress, and therefore only served until the completion of the open term.

He was elected to the Sixty-third Congress to fill the vacancy caused by the resignation of John W. Weeks and served from April 15, 1913 to March 3, 1915. He was an unsuccessful candidate for reelection in 1914 to the Sixty-fourth Congress.

On February 5, 1915, Woodrow Wilson nominated Mitchell for the position of United States Marshal for Massachusetts.^[1] He took office on April 1, 1915.^[2] In 1920 he was appointed collector of internal revenue for the district of Massachusetts. His nomination was confirmed by the United States Senate on March 9, 1920 and he took office on April 1, 1920.^[3][4] He resigned in 1921 and practiced as an attorney in Boston until his death in the Brighton neighborhood of Boston on September 13, 1925.^[5] He was interred in Immaculate Conception Cemetery in Marlborough.

• 128th Massachusetts General Court (1907)