H2O
| Acronym | Definition |
|---|---|
| H2O | Dihydrogen Monoxide (water) |
| H2O | Helping to Overcome (various locations) |
| H2O | Hip-Hop Odyssey |
| H2O | Hard 2 Obtain (hip hop) |
| H2O | Halloween: 20 Years Later (movie) |
| H2O | Hope 2 Others (ministry; various locations) |
| H2O | Here 2 Own (Splinter Cell gaming clan) |
| H2O | House to Home Ownership (Loan) |
| H2O | Heaven 2 Others (teen center) |