GLAS
| Acronym | Definition |
|---|---|
| GLAS | Gay Lesbian and Straight (various locations) |
| GLAS | Giugno, Luglio, Agosto, Settembre (Italian: June, July, August, September; band) |
| GLAS | Gay and Lesbian Arabic Society |
| GLAS | Grade-Level Achievement Standards (various organizations) |
| GLAS | General Ledger Accounting System |
| GLAS | Gust-Load Alleviation System |
| GLAS | Goddard Laboratory of Atmospheric Sciences |
| GLAS | Geosciences Laser Altimeter System |
| GLAS | Giggling Like A Schoolgirl |