Nicholas James Mavroules (November 1, 1929 – December 25, 2003) was an American Democratic Party politician from Massachusetts.

After his election, an FBI informant testified that he had offered Mavroules a $25,000 bribe when he was the mayor of Peabody in connection with liquor licensing.

The allegations against him included extortion, accepting illegal gifts and failing to report them on congressional disclosure and income tax forms.

In April 1993, after his departure from Congress, Mavroules pleaded guilty to 15 of the 17 counts and was sentenced to a fifteen-month prison term.

At the graveside service, another eulogy was made by local reporter and talk show host Dan Rea.