Elizabeth Warden (born February 3, 1978) is a Canadian former competitive swimmer who specialized in backstroke and individual medley events.

Warden qualified for three swimming events at the 2004 Summer Olympics in Athens, by attaining an A-standard entry time of 2:13.60 in the 200-metre individual medley from the Canadian national championships in Victoria, British Columbia.

[3][4] On the first day of the competition, Warden placed second behind Hungary's Éva Risztov in the third heat of the women's 400-metre individual medley, with a time of 4:46.27.

[5] In the 200-metre individual medley, Warden failed to qualify for the final, as she finished fifteenth overall in the semifinal run, in a second slowest time of 2:17.32.

[6][7] In her third event, 200-metre backstroke, Warden missed two places in the semifinals, by 0.76 of a second behind Croatia's Sanja Jovanović, on the morning's preliminary heats with a time of 2:15.77.