Ida E. Woods (September 16, 1870 – October 4, 1940) was an American astronomer at Harvard College Observatory.

She studied photographic plates to discover dozens of variable stars during her career.

[1][4][5][6] She attended the meeting of the American Association of Variable Star Observers (AAVSO) in 1916, when it was held at Harvard.

[7] Publications by Woods included "Light Curve and Orbit of a New Eclipsing Binary H. V. 3622" (1922),[8] "Fifty New Variable Stars in the Southern Milky Way" (1926),[9] "The Southern Station of the Harvard Observatory" (1927),[10] and "Forty New Variable Stars in Sagitarrius" (1928).

[11] Woods held the Sarah F. Whitin Fellowship from Wellesley College in 1912, to fund her research at Harvard.