| Acronym | Definition |
|---|
| HOCC➣Humanitarian Operations Coordination Center (US DoD) |
| HOCC➣Homeschoolers of Collier County (Florida) |
| HOCC➣Hagelandse Oude Citroën Club (Dutch: Hageland Old Citroën Club; automobile club; Hageland, Belgium) |
| HOCC➣Hunt Oil Company of Canada |
| HOCC➣Human Ovarian Cancer Cell |
| HOCC➣Heart of Carolina Chorus (Durham, NC; est. 2004) |
| HOCC➣Heads of Customs Conference (World Customs Organization East and Southern Africa) |