Daniel J. Gallagher (August 31, 1873 – March 24, 1953) was an American attorney and political figure who served as a delegate to the Massachusetts Constitutional Convention of 1917-1918, the United States Attorney for the District of Massachusetts from 1920 to 1921, and a delegate to 1932 Democratic National Convention from Massachusetts.

[1] Daniel J. Gallagher was born in Newton, Massachusetts on August 31, 1873.

[2] His son, Owen A. Gallagher, was a member of the Massachusetts General Court.

Daniel J. Gallagher died in Cambridge, Massachusetts on March 24, 1953, and was buried at St. Joseph Cemetery in West Roxbury.

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