Kathleen Ellis, (born November 28, 1946), also known by her married names Kathy Hood and Kathy Landsgraf is an American former competition swimmer for the Riviera Swim Club, a 1964 Tokyo Olympic champion in the 400-meter freestyle and medley events, and a former world record-holder in three events.

Kathy and her sister swam first with the Indianapolis Athletic Club (IAC) beginning in elementary school.

An outstanding program, Lee coached the Riviera Club from 1962-1977 mentoring four Pan American and Olympic participants in his career.

[1] At only 13 at her first U.S. Olympic Trials in Detroit, Michigan in 1960, she did not advance out of the preliminaries, yet finished tenth in the 100-meter butterfly event, just missing the eight person final round.

[6][2][7] The Head Women's Coach for the 1964 Olympics was Peter Daland, who coached the swim teams at the Los Angeles Athletic Club and the University of Southern California, and worked with Ellis and the U.S. Women's Olympic team during their pre-Olympic training in Los Angeles and later in Tokyo.

[9] In the 400-meter freestyle relay, Ellis swam anchor and teamed with Sharon Stouder, Lillian "Pokey" Watson, and Donna de Varona.

[4] The 4x100-meter medley relay consisted of Cathy Ferguson, Cynthia Goyette, and Sharon Stouder, with Ellis swimming anchor.

[11] Shortly after graduating Indiana University, Kathy married Carl John Hood on the evening of Thursday, July 3, 1969, at Meridian Street United Methodist Church in Indianapolis.

[2] She later lived in Carmel, Indiana with her husband Doug Landsgraf and two children, a boy, and a girl, who excelled as soccer players.