Frank D. O’Connor (1909-1992) was an American lawyer and politician who grew up in Elmhurst, Queens.

O’Connor was born in Manhattan to Irish immigrant parents and raised in Elmhurst, he graduated from Newtown High School and worked his way through Niagara University as a lifeguard. He earned his L.L.B. from Brooklyn Law School in 1934. During WW II, he joined the Coast Guard and served as a legal officer in Alaska.

O’Connor won a seat in the New York State Senate from Queens in 1949 to 1952, and was elected again in 1954 until 1955 when he was elected Queens DA. From 1955 to 1965, O’Connor presided as the Queens District Attorney, after which he served as President of the City Council for three years. As Council President, he promoted distributing public housing throughout the city and creating a civilian complaint review board for the Police Department. This last position hurt O’Connor during his unsuccessful run for Governor against Nelson Rockefeller in 1966. He was elected to the State Supreme Court in 1968 and served until 1976, when Governor Hugh L. Carey appointed him to the Appellate Division, where he served until 1985.

O’Connor was active in numerous civic, professional, and cultural organizations, including the Queens County Bar Association, the Emerald Association of Long Island, and the Metropolitan Museum of Art. As a defense lawyer, he gained national attention in 1953, when he defended Christopher Emanuel Balestrero, a musician who had been wrongfully accused of two holdups in Queens. Three years later, Alfred Hitchcock directed "The Wrong Man," a movie based on the case.