| Esperanto | epo-000 | -ec-o |
| Esperanto | epo-000 | -eco |
| ISO 3166-2 | art-416 | EC-O |
| English | eng-000 | ECO |
| français | fra-000 | ECO |
| español | spa-000 | ECO |
| Karata | kpt-000 | Ec"o |
| català | cat-000 | Eco |
| Deutsch | deu-000 | Eco |
| Dime | dim-000 | Eco |
| English | eng-000 | Eco |
| suomi | fin-000 | Eco |
| français | fra-000 | Eco |
| Idoma | idu-000 | Eco |
| italiano | ita-000 | Eco |
| Malti | mlt-000 | Eco |
| português | por-000 | Eco |
| slovenčina | slk-000 | Eco |
| åarjelsaemiengïele | sma-000 | Eco |
| davvisámegiella | sme-000 | Eco |
| español | spa-000 | Eco |
| lingaz ladin | lld-000 | e co! |
| Nourmaund | xno-000 | e ço |
| luenga aragonesa | arg-000 | eco |
| Romániço | art-013 | eco |
| filename extensions | art-335 | eco |
| català | cat-000 | eco |
| Jas | cns-000 | eco |
| English | eng-000 | eco |
| Esperanto | epo-000 | eco |
| Gbari | gby-000 | eco |
| galego | glg-000 | eco |
| italiano | ita-000 | eco |
| Lingua Franca Nova | lfn-000 | eco |
| bregagliotto | lmo-001 | eco |
| mvskokē | mus-000 | eco |
| lenga piemontèisa | pms-000 | eco |
| português | por-000 | eco |
| português brasileiro | por-001 | eco |
| português europeu | por-002 | eco |
| español | spa-000 | eco |
| castellano de la Argentina | spa-005 | eco |
| castellano venezolano | spa-025 | eco |
| łéngua vèneta | vec-000 | eco |
| lingaedje walon | wln-000 | eco |
| Faliscan | xfa-000 | eco |
| luenga aragonesa | arg-000 | eco- |
| català | cat-000 | eco- |
| Cymraeg | cym-000 | eco- |
| English | eng-000 | eco- |
| galego | glg-000 | eco- |
| interlingua | ina-000 | eco- |
| italiano | ita-000 | eco- |
| Nederlands | nld-000 | eco- |
| occitan | oci-000 | eco- |
| português | por-000 | eco- |
| română | ron-000 | eco- |
| español | spa-000 | eco- |
| Interlingue | ile-000 | ecoʼ |
| occitan | oci-000 | ecò |
| provençau, nòrma mistralenca | oci-002 | ecò |
| Interlingue | ile-000 | ecó |
| Sirionó | srq-000 | ečo |
| Trinitario | trn-000 | ečo |
| tiếng Việt | vie-000 | è cổ |
| italiano | ita-000 | èco |
| trentino | lmo-003 | èco |
| Ega | ega-000 | ècò |
| Gonja | gjn-004 | èčó |
| valdugèis | pms-002 | éco |
| français | fra-000 | éco- |
| lengua lígure | lij-000 | êco |
| Zeneize | lij-002 | êco |
| português | por-000 | ECO-92 |
| português | por-000 | Eco-92 |
| Araona | aro-000 | e-c̷oa |
| Tacana | tna-000 | e-čoa |
| Tacana | tna-000 | e-čoa bošo |
| English | eng-000 | ecoactivism |
| English | eng-000 | eco-activist |
| English | eng-000 | eco activity |
| Tacana | tna-000 | e-čoa doboðo |
| Tacana | tna-000 | e-čoa ec̷ao |
| Tacana | tna-000 | e-čoa e-ina |
| español | spa-000 | ecoagricultura |
| English | eng-000 | ecoagriculture |
| français | fra-000 | éco-agriculture |
| Tacana | tna-000 | ečoaina |
| English | eng-000 | ecoalimental |
| Tacana | tna-000 | e-čoa pawa-hi |
| Tacana | tna-000 | e-čoa pohi |
| Tacana | tna-000 | e-čoa pohi aida |
| English | eng-000 | ECO-approval process |
| português | por-000 | ecoar |
| English | eng-000 | eco atmosphere |
| English | eng-000 | eco-atmosphere |
| français | fra-000 | éco-audit |
| English | eng-000 | Eco-award mark |
| English | eng-000 | ecobabble |
| English | eng-000 | eco-balance |
| English | eng-000 | eco-balances |
| português | por-000 | ecobatímetro |
| français | fra-000 | écobilan |
| español cubano | spa-010 | ecobio |
| français | fra-000 | écobiologie |
| English | eng-000 | ecobiology |
| English | eng-000 | ecobiotic |
| English | eng-000 | ecobiotic adaptation |
| English | eng-000 | ecobiotic adaption |
| English | eng-000 | ecoBlack |
| français | fra-000 | écoblanchiment |
| interlingua | ina-000 | ecoblanchimento |
| Bangi | bni-000 | ecõbo |
| English | eng-000 | eco-boat |
| italiano | ita-000 | eco bombardano |
| français | fra-000 | écobuage |
| français | fra-000 | écobuer |
| français | fra-000 | écobueur |
| English | eng-000 | eco-business |
| lɛ́b ǃkúmɑ́mɑ́ | kdi-000 | ecóc |
| English | eng-000 | ecocapacity |
| English | eng-000 | ecocard |
| català | cat-000 | ecocardiografia |
| italiano | ita-000 | ecocardiografia |
| português | por-000 | ecocardiografia |
| español | spa-000 | ecocardiografía |
| italiano | ita-000 | ecocardiografo |
| español | spa-000 | ecocardiógrafo |
| português | por-000 | ecocardiograma |
| italiano | ita-000 | ecocardiogramma |
| italiano | ita-000 | ecocatastrofe |
| italiano | ita-000 | ecocatàstrofe |
| español | spa-000 | ecocatástrofe |
| English | eng-000 | ecocatastroph |
| English | eng-000 | eco-catastrophe |
| English | eng-000 | ecocatastrophe |
| English | eng-000 | eco catastropie |
| English | eng-000 | Ecocentrism |
| Nederlands | nld-000 | ecocentrisme |
| español | spa-000 | Ecocentrismo |
| English | eng-000 | ECOCERT |
| français | fra-000 | ECOCERT |
| langue picarde | pcd-000 | écôche |
| English | eng-000 | ecochemistry |
| English | eng-000 | ECochG |
| English | eng-000 | ecochronology |
| Tacana | tna-000 | e-čoči |
| español | spa-000 | ecocicio |
| English | eng-000 | ecocidal |
| English | eng-000 | ecocide |
| italiano | ita-000 | ecocide |
| español | spa-000 | ecocide |
| français | fra-000 | écocide |
| italiano | ita-000 | ecocidio |
| español | spa-000 | ecocidio |
| español | spa-000 | ecocinesia |
| English | eng-000 | eco-citizenship |
| français | fra-000 | écocitoyenneté |
| English | eng-000 | Eco-City |
| English | eng-000 | eco city |
| English | eng-000 | ecocity |
| español | spa-000 | ecoclima |
| français | fra-000 | écoclimat |
| English | eng-000 | ecoclimate |
| English | eng-000 | ecoclimatic adaptation |
| English | eng-000 | ecoclimatic forecasting pests |
| français | fra-000 | écoclimatologie |
| English | eng-000 | ecoclimatology |
| English | eng-000 | ecocline |
| français | fra-000 | écocline |
| English | eng-000 | ECO code |
| italiano | ita-000 | ecocompatibile |
| français | fra-000 | écoconception |
| italiano | ita-000 | eco consapevole |
| français | fra-000 | écoconseiller |
| français | fra-000 | Écoconstruction |
| español | spa-000 | ecocontrol |
| English | eng-000 | ecocrisis |
| English | eng-000 | ecocriticism |
| English | eng-000 | ecocycle rule |
| español | spa-000 | eco del eco |
| español | spa-000 | eco del giro |
| English | eng-000 | ecodeme |
| español | spa-000 | eco de radar |
| español | spa-000 | ecodesarrollo |
| português | por-000 | ecodesenvolvimento |
| magyar | hun-000 | Eco-design |
| português | por-000 | Eco-design |
| English | eng-000 | Ecodesign |
| français | fra-000 | Ecodesign |
| English | eng-000 | ecodesign |
| English | eng-000 | ecodesign strategy |
| English | eng-000 | ecodevelopment |
| français | fra-000 | ecodéveloppement |
| français | fra-000 | écodéveloppement |
| italiano | ita-000 | eco di rotazione |
| English | eng-000 | ecodisaster |
| Deutsch | deu-000 | Eco-Drive |
| English | eng-000 | Eco-Drive |
| français | fra-000 | Écoduc |
| français | fra-000 | écoduc |
| Nederlands | nld-000 | ecoduct |
| español | spa-000 | Ecoducto |
| español | spa-000 | ecoducto |
| English | eng-000 | eco-dumping |
| Cymraeg | cym-000 | ecodwristiaeth |
| Tacana | tna-000 | ec̷oe |
| TechTarget file types | art-336 | ECO-ECCO-Database-File |
| English | eng-000 | Eco-eco technology |
| français | fra-000 | éco-efficacité |
| français | fra-000 | écoefficacité |
| English | eng-000 | eco-efficiency |
| English | eng-000 | eco-efficiency practice |
| English | eng-000 | eco-efficiency technique |
| English | eng-000 | eco-efficient process |
| español | spa-000 | eco-eficiencia |
| luenga aragonesa | arg-000 | ecoeficiencia |
| español | spa-000 | ecoeficiencia |
| català | cat-000 | ecoeficiència |
| luenga aragonesa | arg-000 | ecoeficient |
| català | cat-000 | ecoeficient |
| español | spa-000 | eco-eficiente |
| français | fra-000 | écoemballage |
| español | spa-000 | Ecoembes |
| lenga arpitana | frp-000 | écoen |
| italiano | ita-000 | ecoendoscopia |
| français | fra-000 | écoénergétique |
| English | eng-000 | E-CO Energi |
| bokmål | nob-000 | E-CO Energi |
| English | eng-000 | ecoengineering |
| français | fra-000 | éco-épidémiologie |
| italiano | ita-000 | ecoetichetta |
| español | spa-000 | ecoetiqueta |
| español | spa-000 | ecoetiquetado |
| français | fra-000 | éco-étiquetage |
| français | fra-000 | écoétiquetage |
| français | fra-000 | éco-étiquette |
| langue picarde | pcd-000 | ècoeurânt |
| français | fra-000 | écoeurant |
| français | fra-000 | écoeurante |
| français | fra-000 | écoeuré |
| langue picarde | pcd-000 | ècoeuremé |
| français | fra-000 | écoeurement |
| français | fra-000 | écoeurer |
| français | fra-000 | écoeurer quelqu’un |
| français | fra-000 | écoeurer quelqu’un de |
| langue picarde | pcd-000 | ècoeureu |
| English | eng-000 | eco-evaluation system |
| English | eng-000 | ecofact |
| français | fra-000 | écofact |
| English | eng-000 | ecofactor |
| English | eng-000 | ecofallow |
| English | eng-000 | ecofascism |
| Nederlands | nld-000 | ecofascisme |
| français | fra-000 | écofascisme |
| español | spa-000 | ecofascismo |
| English | eng-000 | ecofascist |
| français | fra-000 | écofasciste |
| English | eng-000 | ecofeminism |
| español | spa-000 | ecofeminism |
| français | fra-000 | écoféminisme |
| English | eng-000 | ecofeminist |
| français | fra-000 | écoféministe |
| English | eng-000 | EC Official Journal |
| English | eng-000 | Eco Fighters |
| français | fra-000 | Eco Fighters |
| English | eng-000 | ECOFIN |
| magyar | hun-000 | ECOFIN |
| català | cat-000 | Ecofin |
| čeština | ces-000 | Ecofin |
| Deutsch | deu-000 | Ecofin |
| eesti | ekk-000 | Ecofin |
| ελληνικά | ell-000 | Ecofin |
| English | eng-000 | Ecofin |
| suomi | fin-000 | Ecofin |
| français | fra-000 | Ecofin |
| hrvatski | hrv-000 | Ecofin |
| íslenska | isl-000 | Ecofin |
| italiano | ita-000 | Ecofin |
| latviešu | lvs-000 | Ecofin |
| Malti | mlt-000 | Ecofin |
| Nederlands | nld-000 | Ecofin |
| polski | pol-000 | Ecofin |
| português | por-000 | Ecofin |
| português brasileiro | por-001 | Ecofin |
| português europeu | por-002 | Ecofin |
| română | ron-000 | Ecofin |
| slovenčina | slk-000 | Ecofin |
| slovenščina | slv-000 | Ecofin |
| español | spa-000 | Ecofin |
| srpski | srp-001 | Ecofin |
| català | cat-000 | ecofinançament |
| français | fra-000 | éco-financement |
| español | spa-000 | eco-financiación |
| luenga aragonesa | arg-000 | ecofinanciación |
| español | spa-000 | ecofinanciación |
| lietuvių | lit-000 | Ecofinas |
| English | eng-000 | Ecofin Council |
| Deutsch | deu-000 | ECOFIN-Rat |
| íslenska | isl-000 | ecofin-ráð |