Richard "Slippery Dick" Connolly (1810 Dunmanway, County Cork, Ireland – May 30, 1880 Marseille, France) was an American politician from New York.

In 1845, Collector of the Port Cornelius Van Wyck Lawrence appointed Connolly as a clerk in the customs house.

He was elected New York City Comptroller in 1867, and became a member of the infamous "Tweed Ring."

He was re-appointed by Mayor A. Oakey Hall as City Comptroller under the "Tweed Charter" and remained in office until his resignation on November 18, 1871.

On New Year's Day, 1872, he was released on bail by Judge George G. Barnard, and went abroad, never to return to the United States.