| Beta Sigma Omicron | |
|---|---|
| ΒΣΟ | |
 | |
| Founded | December 12, 1888 University of Missouri |
| Type | Social |
| Former Affiliation | NPC |
| Status | Merged |
| Merge Date | August 7, 1964 |
| Successor | Zeta Tau Alpha |
| Scope | National (US) |
| Motto | We Live to Do Good |
| Colors | Ruby and Pink |
| Symbol | Stars, Covenant, Lamp, Laurel |
| Flower | Red and Pink Carnations |
| Jewel | Ruby |
| Patron Greek divinity | Hestia |
| Publication | The Beta Sigma Omicron (open) The Lamp (esoteric), and The Urn |
| Chapters | 61 |
| Members | 15,000 lifetime |
| Headquarters | United States |
Beta Sigma Omicron (ΒΣΟ) is a defunct American collegiate sorority. It was founded on December 12, 1888, at the University of Missouri and merged with Zeta Tau Alpha on August 7, 1964.