<SEC-DOCUMENT>0001752724-22-132216-index.html : 20220607
<SEC-HEADER>0001752724-22-132216.hdr.sgml : 20220607
<ACCEPTANCE-DATETIME>20220607122251
ACCESSION NUMBER:		0001752724-22-132216
CONFORMED SUBMISSION TYPE:	N-CEN
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20220331
FILED AS OF DATE:		20220607
DATE AS OF CHANGE:		20220607
EFFECTIVENESS DATE:		20220607

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Eaton Vance National Municipal Opportunities Trust
		CENTRAL INDEX KEY:			0001454741
		IRS NUMBER:				000000000
		FISCAL YEAR END:			0331

	FILING VALUES:
		FORM TYPE:		N-CEN
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-22269
		FILM NUMBER:		221000458

	BUSINESS ADDRESS:	
		STREET 1:		TWO INTERNATIONAL PLACE
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02110
		BUSINESS PHONE:		617-482-8260

	MAIL ADDRESS:	
		STREET 1:		TWO INTERNATIONAL PLACE
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02110

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Eaton Vance National Municipal Trust
		DATE OF NAME CHANGE:	20090126
</SEC-HEADER>
<DOCUMENT>
<TYPE>N-CEN
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
Document 1 - file: primary_doc.html

Document 1 - RAW XML: primary_doc.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>INTERNAL CONTROL RPT
<SEQUENCE>2
<FILENAME>NCEN_811-22269_51047881_0322.htm
<TEXT>
Document 2 - file: NCEN_811-22269_51047881_0322.htm

</DOCUMENT>
</SEC-DOCUMENT>