Dorothy Ann Eckels Bailie (born 1935) is an American mathematician who worked at Goddard Space Flight Center in the 1950s and 1960s.

She was one of the three authors of the 1959 report establishing Earth's shape as asymmetrical and "pear-shaped", based on data from Vanguard 1.

[6] By 1959 she worked in the Theoretical Division of NASA's Goddard Space Flight Center, on calculating and analyzing complex orbits for satellites.

[7] She, R. Kenneth Squires, and John A. O'Keefe were the team that determined that the Earth was asymmetrical and "pear-shaped",[8] based on data from Vanguard 1.

[9][10] James E. Webb mentioned Bailie, Nancy Roman, and Eleanor C. Pressly in his 1961 commencement speech at George Washington University, as examples of women in the space program.