Eta Upsilon Gamma (ΗΥΓ) was a national collegiate junior sorority operating under that name in the United States from 1901 through at least 1968.

[7] The Eta Upsilon Gamma constitution specified that its grand chapter officers "must be neither betrothed or married".

[7] It continued, "Man has no place in the organization of the sorority, and the rule against the members who yield to him is rigidly enforced.

[11][12] In September 1914, Eta Upsilon Gamma was a founding member of the Junior Pan-Hellenic Congress.

[16] As the sorority's host institutions became four-year colleges, some chapters left to join National Panhellenic Conference members.

[1] On June 16, 1932, a delegation from Eta Upsilon Gamma had lunch with President Herbert Hoover.

[2] The Eta Upsilon Gamma insignia was designed in 1908 by Zeta chapter members Edna Hanna and Jae Fonte.

[24] The insignia consisted of a shield that featured a lamp on top of an equilateral triangle and the motto "Be Strong in the Truth", supported by a unicorn.

[24] The sorority's badge was a diamond-shaped shield in black enamel bearing in center clasped hands, with the Greek letters ΗΥΓ above it and a skull and cross bones below.

[26] The lamp symbolized higher scholarship and the diamond in its flame represented the light or torch of knowledge.

[6][15] Its original flag was olive green with the Greek letters ΗΥΓ in gold; a later version also featured the sorority's coat of arms.