Kathleen O'Connor Ives (born July 1977) is an American attorney and former Democratic politician from the Commonwealth of Massachusetts.

[1] In 2012, she was elected to Massachusetts Senate representing the 1st Essex District, which encompasses Amesbury, Haverhill, Merrimac, Newburyport, Methuen, Salisbury, and portions of North Andover.

She handily dispatched Jessica Finnochiaro of Methuen in the Democratic primary, and bested Toohey in a rematch in the general election.

Ives won a third term in 2016, beating Adele Martino of Haverhill in the primary and facing no general election opposition.

[3] Kathleen O'Connor Ives graduated from Mount Holyoke College, magna cum laude, in 1999 with her Bachelor of Arts in Environmental Politics and International Relations.