<SEC-DOCUMENT>0000797923-20-000013-index.html : 20201223
<SEC-HEADER>0000797923-20-000013.hdr.sgml : 20201223
<ACCEPTANCE-DATETIME>20201223141917
ACCESSION NUMBER:		0000797923-20-000013
CONFORMED SUBMISSION TYPE:	N-CSRS
PUBLIC DOCUMENT COUNT:		6
CONFORMED PERIOD OF REPORT:	20201031
FILED AS OF DATE:		20201223
DATE AS OF CHANGE:		20201223
EFFECTIVENESS DATE:		20201223

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BNY Mellon Opportunistic Municipal Securities Fund
		CENTRAL INDEX KEY:			0000797923
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			NY
		FISCAL YEAR END:			0430

	FILING VALUES:
		FORM TYPE:		N-CSRS
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-04764
		FILM NUMBER:		201411645

	BUSINESS ADDRESS:	
		STREET 1:		C/O BNY MELLON INVESTMENT ADVISER, INC.
		STREET 2:		240 GREENWICH STREET
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10286
		BUSINESS PHONE:		2129226400

	MAIL ADDRESS:	
		STREET 1:		C/O BNY MELLON INVESTMENT ADVISER, INC.
		STREET 2:		240 GREENWICH STREET
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10286

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	DREYFUS MUNICIPAL BOND OPPORTUNITY FUND
		DATE OF NAME CHANGE:	20081201

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	DREYFUS PREMIER MUNICIPAL BOND FUND
		DATE OF NAME CHANGE:	19970605

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	PREMIER MUNICIPAL BOND FUND
		DATE OF NAME CHANGE:	19920703
<SERIES-AND-CLASSES-CONTRACTS-DATA>
<EXISTING-SERIES-AND-CLASSES-CONTRACTS>
<SERIES>
<OWNER-CIK>0000797923
<SERIES-ID>S000000090
<SERIES-NAME>BNY Mellon Opportunistic Municipal Securities Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000000131
<CLASS-CONTRACT-NAME>Class A
<CLASS-CONTRACT-TICKER-SYMBOL>PTEBX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000000133
<CLASS-CONTRACT-NAME>Class C
<CLASS-CONTRACT-TICKER-SYMBOL>DMBCX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000001400
<CLASS-CONTRACT-NAME>Class Z
<CLASS-CONTRACT-TICKER-SYMBOL>DMBZX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000173299
<CLASS-CONTRACT-NAME>Class Y
<CLASS-CONTRACT-TICKER-SYMBOL>DMBYX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000173300
<CLASS-CONTRACT-NAME>Class I
<CLASS-CONTRACT-TICKER-SYMBOL>DMBVX
</CLASS-CONTRACT>
</SERIES>
</EXISTING-SERIES-AND-CLASSES-CONTRACTS>
</SERIES-AND-CLASSES-CONTRACTS-DATA>
</SEC-HEADER>
<DOCUMENT>
<TYPE>N-CSRS
<SEQUENCE>1
<FILENAME>lp1-022.htm
<DESCRIPTION>SEMI-ANNUAL REPORT
<TEXT>
Document 1 - file: lp1-022.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.CERT
<SEQUENCE>2
<FILENAME>exhibit302.htm
<DESCRIPTION>CERTIFICATION REQUIRED BY RULE 30A-2
<TEXT>
Document 2 - file: exhibit302.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.906 CERT
<SEQUENCE>3
<FILENAME>exhibit906.htm
<DESCRIPTION>CERTIFICATION REQUIRED BY SECTION 906
<TEXT>
Document 3 - file: exhibit906.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>x20122310492900.jpg
<TEXT>
Document 5 - file: x20122310492900.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>x20122310492901.jpg
<TEXT>
Document 6 - file: x20122310492901.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>x20122310493100.jpg
<TEXT>
Document 7 - file: x20122310493100.jpg

</DOCUMENT>
</SEC-DOCUMENT>