Teresa Vaill (born November 20, 1962) is a female racewalker from the United States.

She was born in Torrington, Connecticut.

Vaill set her personal best in the women's 20 km race walk event (1:33:23) on April 1, 2001, at a meet in Manassas, Virginia.

She remains an active competitor, winning numerous masters championships and placing in the USA National Championships (Open Division) as recently as 2018.

[1] Her twin sister Lisa Vaill was also an international racewalker, and marathon runner.