<SEC-DOCUMENT>0000940394-20-000612-index.html : 20200320
<SEC-HEADER>0000940394-20-000612.hdr.sgml : 20200320
<ACCEPTANCE-DATETIME>20200320100435
ACCESSION NUMBER:		0000940394-20-000612
CONFORMED SUBMISSION TYPE:	497
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20200320
DATE AS OF CHANGE:		20200320
EFFECTIVENESS DATE:		20200320

FILER:

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

	FILING VALUES:
		FORM TYPE:		497
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-234007
		FILM NUMBER:		20730547

	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>497
<SEQUENCE>1
<FILENAME>eotprosupp.htm
<DESCRIPTION>EATON VANCE NATIONAL MUNICIPAL OPPORTUNITIES TRUST THRESHOLD FILING DTD 3-20-2020
<TEXT>
Document 1 - file: eotprosupp.htm

</DOCUMENT>
</SEC-DOCUMENT>