Theta Upsilon Omega (ΘΥΩ), was a national collegiate fraternity in the United States.

[2] The following nine local fraternities were part of the NIC meeting and formed Theta Upsilon Omega: They were joined by Pi Rho Phi of Westminster College at the Charter Arch Convocation meeting, held at Bucknell University in Lewisburg, Pennsylvania from February 21 to 23, 1924.

[5] Theta Upsilon Omega's official seal was a voided fusil bearing inscriptions regarding the fraternity and having in the center, the Squire's helmet facing to the left.

[7] The fraternity's badge was a small pin of blue enamel with a circular contour in the center of which was a ten-pointed gold star enclosing a jewel.

[6][3] The badge had three short triangular arms which were equidistant around the pin, and on them, in gold, the Greek letters ΘΥΩ.

[6][3] Its recognition pin was its crest in old gold, consisting of a mural crown from the top of which issues a dragon's head.