1. Albania: Albanian Standards, Metrology and Quality Institute (ALBSQI) developed Albanian Standards (ALBS).
3. Austria: The Austrian Standards Institute (ASiC) develops Austrian Standards (ÖNORM) and European Standards (EN).
4. Belarus: The Belarusian State Committee for Standardization, Metrology and Certification (BELST) has developed the Belarusian Standards (STB).
5. Belgium: The Bureau of Standardization (NBN) develops Belgian Standards (NBN) and European Standards (EN).
6. Bosnia and Herzegovina: The Bosnia and Herzegovina Agency for Standardization and Metrology (BAS) developed the Bosnia and Herzegovina Standards (BAS).
7. Bulgaria: Bulgarian Institute for Standardization (BDS) has developed Bulgarian Standards (BDS) and European Standards (EN).
8. Croatia: The Croatian Standards Institute (DZNM) has developed Croatian Standards (HRN) and European Standards (EN).
9. Cyprus: The Cyprus Organization for Standardization and Control of Quality (CYS) develops Cyprus Standards (CYS) and European Standards (EN).
10. Czech Republic: The Czech Institute for Standardization (CNI) develops Czech Standards (ČSN) and European Standards (EN).
11. Denmark: The Danish Organization for Standardization (DS, Dansk Standard) develops Danish Standards (DS) and European Standards (EN).
12. Estonia: The Estonian Centre for Standardisation (EVS) develops the Estonian Standards (EVS).
13. Faroe Islands: Faroe Islands Standardization Office (FJOD).
14. Finland: The Finnish Institute for Standardization (SFS, Suomen Standardisoisoimisliitto) develops Finnish Standards (SFS) and European Standards (EN).
15. France: The French Association for Standardization (AFNOR) (Association française de normalisation) develops French Standards (NF) and European Standards (EN).
16. Germany: The German Institute for Standardization (DIN, Deutsches Institut für Normung) develops German Standards (DIN) and European Standards (EN).
17. Gibraltar: The Gibraltar Standards Authority (GSA) has developed the Gibraltar Standards (GSL).
18. Greece: The Hellenic Organization for Standardization (ELOT) develops Greek Standards (ELOT) and European Standards (EN).
19. Hungary: The Hungarian Institute for Standardization (MSZT, Magyar Szabványügyi Testület) develops Hungarian Standards (MSZT) and European Standards (EN).
20. Iceland: The Icelandic Standards Agency (IST) develops Icelandic Standards (IST) and European Standards (EN).
21. Ireland: The National Standards Authority of Ireland (NSAI) develops Irish Standards (NSAI) and European Standards (EN).
22. Italy: The Italian Institute for Standardization (UNI, Ente Nazionale Italiano di Unificazione) develops Italian Standards (UNI) and European Standards (EN).
23. Latvia: The Latvian Agency for Standardization, Metrology and Testing (LVS, Latvijas Standarts) has developed Latvian Standards (LVS) and European Standards (EN).
24. Liechtenstein: The Liechtenstein Bureau of Standardization, Metrology and Testing (LGA, Liechtensteinische Normenorganisation) has developed the Liechtenstein Standards (LGN).
25. Lithuania: The Lithuanian Standards Board (LST) develops Lithuanian Standards (LST) and European Standards (EN).
26. Luxembourg: The Luxembourg Agency for Standardization, Metrology, Quality and Safety (ILNAS, Institut Luxembourgeois de la Normalisation, de l'Accréditation, de la Sécurité et qualité au travail) has developed Luxembourg Standards (ILNAS) and European Standards (EN).
27. Macedonia: The Institute for Standardization of Macedonia (ISRM) develops the Macedonian Standards (ISRM) and European Standards (EN).
28. Malta: The Malta Competition and Consumer Affairs Authority (MCCAA) has developed the Maltese Standards (MCCAA) and European Standards (EN).
29. Moldova: The Moldovan Agency for Standardization and Metrology (MOLDST) develops Moldovan Standards (MOLDST) and European Standards (EN).
30. Monaco: The Monaco Bureau of Standardization, Metrology, Quality and Safety (IMSEE, Institut Monégasque de la Statistique et des Études Économiques) has developed the Monegasque Standard (IMSEE).
31. Montenegro: The Institute for Standardization and Metrology of Montenegro (ISME) develops the Montenegoro Standards (ISME) and European Standards (EN).
32. Netherlands: The Dutch Institute for Standardization (NEN, Stichting Koninklijk Nederlands Normalisatie Instituut) develops the Dutch Standard (NEN) and the European Standard (EN).
33. Republic of North Macedonia: The Institute for Standardization of the Republic of North Macedonia (ISRM) has developed the North Macedonian Standards (ISRM) and European Standards (EN).
34. Norway: The Norwegian Institute for Standardization (SN, Standard Norge) develops Norwegian Standards (NS) and European Standards (EN).
35. Poland: The Polish Centre for Standardization, Metrology and Testing (CPBP, Centralny Polski Bezpieczeństwa i Jakości Przemysłowej) has developed Polish Standards (PN) and European Standards (EN).
36. Portugal: The Portuguese Institute of Standards and Quality (IPQ, Instituto Português da Qualidade) has developed Portuguese Standards (NP) and European Standards (EN).
37. Romania: The Romanian Institute for Standardization (ASRO, Asociaţia de Standardizare şi Certificare din România) develops Romanian Standards (ASRO) and European Standards (EN).
38. Russia: The Russian Federal Institute for Standardization and Metrology (Rosstandart) has developed Russian National Standards (GOST) and European Standards (EN).
39. San Marino: The San Marino Standardization Bureau (UNSM, Ufficio per la Normalizzazione, la Sicurezza, la Metrologia e la Tariffa Doganale) developed the San Marino Standards (UNSM).
40. Serbia: The Institute for Standardization of Serbia (ISS) develops Serbian Standards (ISS) and European Standards (EN).
41. Slovakia: The Slovak Agency for Standardization, Metrology and Testing (SUTN, Slovenská technická norma) develops Slovak Standards (STN) and European Standards (EN).
42. Slovenia: The Slovenian Institute for Standardization (SIST, Slovenski inštitut za standardizacijo) develops Slovenian Standards (SIST) and European Standards (EN).
43. Spain: The Spanish Institute for Standardization and Quality (AENOR, Asociación Española de Normalización y Certificación) has developed Spanish Standards (UNE) and European Standards (EN).
44. Sweden: The Swedish Standards Institute (SIS) develops Swedish Standards (SS) and European Standards (EN).
45. Switzerland: The Swiss Organization for Standardization (SNV, Schweizerische Normen-Vereinigung) develops Swiss Standards (SN) and European Standards (EN).
46. Ukraine: The Ukrainian National Center for Standardization and Metrology (DSTU, Derzhstandart Ukrainy) has developed Ukrainian Standards (DSTU) and European Standards (EN).
47. United Kingdom: The British Standards Institution (BSI) develops British Standards (BS) and European Standards (EN).