National Trade Union Bloc

{{Infobox union

|name = BNS

|location_country= Romania

|affiliation = ITUC, ETUC

|members = 375,000

|full_name = National Trade Union Bloc

|native_name = Blocul Național Sindical

|image = 225px

|founded = 1991

|dissolved =

|merged =

|headquarters = Bucharest, Romania

|key_people = Dumitru Costin, president
Matei Bratianu, secretary general

|website = [http://www.bns.ro www.bns.ro]

|footnotes =

}}

The National Trade Union Bloc ({{langx|ro|Blocul Național Sindical}}, BNS) is the second largest national trade union center in Romania. It was founded in 1991 and has a membership of 375,000.

Plans for a BNS merger with CNSLR-Fratia were announced in 1994, however this has not taken place.

BNS is affiliated with the International Trade Union Confederation, and the European Trade Union Confederation.