| commodity | towar |
| Commodore CBM-II | Commodore CBM-II |
| Commodore International | Commodore International |
| Commodore PET | Commodore PET |
| Commodores | The Commodores |
| Commodus | Kommodus |
| common | pospolity |
| common agreement | porozumienie społeczne |
| common agricultural policy | Wspólna Polityka Rolna UE |
| common agricultural policy of the EU | Wspólna Polityka Rolna UE |
| Common basilisk | Bazyliszki |
| Common blackbird | Kos |
| Common Blue Damselfly | Nimfa stawowa |
| Common Brushtail Possum | Pałanka kuzu |
| Common Butterbur | Lepiężnik różowy |
| Common capital stock | Kapitał zakładowy |
| Common Chimpanzee | Szympans zwyczajny |
| common clothes moth | mól |
| common cold | przeziębienie |
| common commercial policy | wspólna polityka gospodarcza |
| Common Cottongrass | Wełnianka wąskolistna |
| Common Crossbill | Krzyżodziób świerkowy |
| Common Cuttlefish | Mątwa zwyczajna |
| Common Darter | Szablak podobny |
| Common descent | Ostatni uniwersalny wspólny przodek |
| Common Desktop Environment | Common Desktop Environment |
| Common Development and Distribution License | Common Development and Distribution License |
| Common Duiker | Grym |
| Common Dwarf Mongoose | Mangusta karłowata |
| Common Egg-eater | Jajożer |
| Common Eider | edredon |
| Common Era | naszej ery |
| Common Fig | Figowiec pospolity |
| Common Foreign and Security Policy | Wspólna polityka zagraniczna i bezpieczeństwa |
| Common fractions | Ułamek |
| Common Frog | Żaba trawna |
| Common Gateway Interface | CGI |
| Common Genet | Żeneta zwyczajna |
| Common grasshopper warbler | Świerszczak |
| Common greenshank | Kwokacz |
| Common Guillemot | Nurzyk |
| common guitarfish | rocha |
| common gull | mewa pospolita |
| Common Haircap | Płonnik pospolity |
| Common Hardware Reference Platform | Common Hardware Reference Platform |
| Common Hawker | Żagnica torfowa |
| Common Hawthorn | Głóg jednoszyjkowy |
| Common Hazel | Leszczyna pospolita |
| Common hepatic artery | Tętnica wątrobowa wspólna |
| common hepatica | przylaszczka pospolita |
| Common Hogweed | Barszcz zwyczajny |
| Common Horse-chestnut | Kasztanowiec zwyczajny |
| Common horsechestnut | Kasztanowiec zwyczajny |
| common horsetail | skrzyp polny |
| Common house martin | Jaskółka oknówka |
| Common house-martin | Jaskółka oknówka |
| Common inn stay | Dyýur |
| Common Intermediate Format | CIF |
| Common Intermediate Language | Common Intermediate Language |
| common kestrel | pustułka |
| common knotgrass | rdest ptasi |
| Common Language Runtime | Common Language Runtime |
| Common law spouse | Znaczący inny |
| Common ling | Molwa pospolita |
| Common Marbled Carpet | Paśnik obcinek |
| Common Merganser | Tracz nurogęś |
