Robert A. Antonioni (born July 15, 1958) is an American attorney and politician who served in the Massachusetts General Court and on the Leominster City Council.

Antonioni was born on July 15, 1958, in Leominster, Massachusetts.

He graduated from the College of the Holy Cross and New England School of Law.

[1] Antonioni's political career began in 1985 when he ran for a seat on the Leominster City Council.

In 1988, Antonioni was elected to the Massachusetts House of Representatives.