Dean Anderson Gallo (November 23, 1935 – November 6, 1994) was an American politician and businessman who served as a member of the United States House of Representatives, representing New Jersey's 11th congressional district from 1985 until his death from prostate cancer in Denville, New Jersey, in 1994.

However, Gallo ultimately did not run and instead endorsed Assembly Minority Leader Thomas Kean, who narrowly lost the GOP primary to Millicent Fenwick.

Gallo won the Republican primary by a more than 2–1 margin against four other candidates, W. Thomas Tintle, Gerard R. Hughes, Jack Newberger and Raymond F.

[citation needed] New Jersey's congressional map drawn after the 1980 United States census was thrown out in 1984 on the grounds that the variations in district populations were too large.

A panel of federal judges substituted a new map that significantly altered the 11th District, home to 11-term Democratic incumbent Joseph Minish.

To make up for the loss in population, the district was pushed further west to include all of heavily Republican Morris County.

[citation needed] In 1994, Gallo faced a primary challenge from Dr. Joseph Pennacchio, a considerably more conservative Republican.