Certain relations are established between the participants of the union electronic catalogue to create a public information resource and provide open access to it in accordance with the developed Rules for participants. Participating libraries send information about the replenishment of their local electronic catalogues by e-mail to the project coordinator. On the website of the union catalogue, libraries are presented by the number of records transferred.
| # | Название | Code | City |
|---|---|---|---|
| 1 | National library of Uzbekistan named after Alisher Navoi | AAA | Yunusobod |
| 2 | The Republican center of the union electronic catalog | AAH | Yunusobod |
| 3 | Fundamental library of Academy of Sciences of the Republic of Uzbekistan | ABA | Mirzo Ulugbek |
| 4 | Republican scientific pedagogical library | AHD | Chilonzor |
| 5 | Republican Children's Library | ABI | Mirzo Ulugbek |
| 6 | State scientific medical library of the Ministry of Health of the Republic of Uzbekistan | AIA | Mirobod |
| 7 | Information and library center of Karakalpakistan | OAA | Nukus sh. |
| 8 | Information and library center of Andijan region named after Z. M. Bobur | IAA | Andijon c. |
| 9 | Information and library center of Bukhara region named after Abu Ali ibn Sino | LAA | Buxoro sh. |
| 10 | Information and library center of Navoi region named after A. Kadiriyy | MAA | Navoi с. |
| 11 | Information and library center of Jizzakh region named after Sharof Rashidov | EAA | Djizak |
| 12 | Information and library center of Namangan region named after Nodirabegim | HAA | Namangan |
| 13 | Information and library center of Sirdarya region named after Alisher Navoi | DAA | Guliston sh |
| 14 | Information and library center of Surkhandarya region named after Adib Sobir Termiziy | KAA | Termiz city |
| 15 | Information and library center of Tashkent region «Turon» | AGA | Yashnobod |
| 16 | Information and library center of Tashkent city «BILIM» | AHA | Chilonzor |
| 17 | Information and ibrary center of Fergana region named after Ahmad al-Fargoniy | GAA | Ferghana |
| 18 | Information and library center of Khorezm region named after Mahmud Zamakhshari | NAA | Urganch |
| 19 | Information and library center of Kashkadarya region named after Sayido Nasafiy | JAA | Qarshi c. |
| 20 | Information and library center of Samarkand region named after A. S. Pushkin | FAA | Samarqand c. |
