| Woordsoort | selfstandige naamwoord |
|---|---|
| Meervoud | protons |
| Albanies | proton |
|---|---|
| Duits | Proton |
| Engels | proton |
| Esperanto | protono |
| Frans | proton |
| Fries | proton |
| Grieks | πρωτόνιο |
| Luxemburgs | Proton |
| Nederlands | proton |
| Portugees | próton |
| Roemeens | proton |
| Spaans | protón |
| Swahili | protoni |
| Sweeds | proton |
| Thai | โปรตอน |
| Turks | proton |
| Wallies | proton |