| Dunmurry Library | South Eastern Education and Library Board | 028 9062 3007 | DunmurryLibrary@NI-Libraries.NET |
| Dungiven Library | Western Education and Library Board | 028 7774 1475 | DungivenLibrary@NI-Libraries.NET |
| Dungannon Library | Southern Education and Library Board | 028 8772 2952 | DungannonLibrary@NI-Libraries.NET |
| Dundonald Library | South Eastern Education and Library Board | 028 9048 3994 | DundonaldLibrary@NI-Libraries.NET |
| Dromore Library | Southern Education and Library Board | 028 9269 2280 | DromoreLibrary@NI-Libraries.NET |
| Draperstown Library | North Eastern Education and Library Board | 028 7962 8249 | Draperstown.Library@NI-Libraries.NET |
| Downpatrick Library | South Eastern Education and Library Board | 028 4461 2895 | DownpatrickLibrary@NI-Libraries.NET |
| Donaghadee Library | South Eastern Education and Library Board | 028 9188 2507 | DonaghadeeLibrary@NI-Libraries.NET |
| Dispute Avoidance and Resolution Service Officer | Southern Education and Library Board | 028 3751 2383 / 2224 | DARS.Enquiry@selb.org |
| Dispute Avoidance and Resolution Service Officer | Belfast Education and Library Board | 028 9056 4030 | DARS.enquiry@belb.co.uk |
| Dispute Avoidance and Resolution Service Officer | South Eastern Education and Library Board | 028 9056 6954 | DARS.enquiry@seelb.org.uk |
| Dispute Avoidance and Resolution Service Officer | Western Education and Library Board | 028 7186 3520 | DARS.enquiry@welbni.org |
| Dispute Avoidance and Resolution Service Officer | North Eastern Education and Library Board | 028 2566 2387 | DARS.enquiry@neelb.org.uk |
| Dispute Avoidance and Resolution Service Manager | Initial contact for all Boards | 028 3751 2383 | oliver.sherry@selb.org |
| Derry Central | Western Education and Library Board | 028 7127 2300 | DerryCentralLibrary@NI-Libraries.NET |
