Robert C. Hartnett (born September 3, 1938)[1] is an American politician.

[2] He served as a Democratic member for the 106th and 109th district of the Florida House of Representatives.

He attended St. Leo's Preparatory School and the University of Miami.

[4] The next year, he was elected as the first representative for the newly established 106th district.

In the same year, he was elected to represent the 109th district, succeeding Jeff Gautier.