| squadrone | squadron |
| squagliarsela | slip out |
| squalifica | disqualification |
| squalificare | disqualify |
| squallido | miserable |
| squallore | bleakness |
| squalo | shark |
| squalo balena | whale shark |
| squalo cetorino | basking shark |
| squalo elefante | basking shark |
| squalo pinna bianca del reef | whitetip reef shark |
| squama | scale |
| squama cutanea | scurf |
| squamare | scale |
| Squamata | Squamata |
| squamato | scaly |
| squamoso | scaly |
| squarcio | large tear |
| Square-Enix | Square Enix |
| squartamento | quartering |
| squartatore | ripper |
| squash | squash |
| Squashfs | SquashFS |
| squattrinato | broke |
| squaw | squaw |
| Squid | Squid cache |
| Squiddy Tentacolo | Squidward Tentacles |
| Squier | Squier |
| squilibrare | unbalance |
