    <SEC-DOCUMENT>0000928816-22-000709-index.html : 20220628
    <SEC-HEADER>0000928816-22-000709.hdr.sgml : 20220628
    <ACCEPTANCE-DATETIME>20220628164714
    ACCESSION NUMBER:		0000928816-22-000709
    CONFORMED SUBMISSION TYPE:	N-CSR
    PUBLIC DOCUMENT COUNT:		25
    CONFORMED PERIOD OF REPORT:	20220430
    FILED AS OF DATE:		20220628
    DATE AS OF CHANGE:		20220628
    EFFECTIVENESS DATE:		20220628

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			PUTNAM MUNICIPAL OPPORTUNITIES TRUST
    		CENTRAL INDEX KEY:			0000900422
    		IRS NUMBER:				043187549
    		STATE OF INCORPORATION:			MA
    		FISCAL YEAR END:			0430

    	FILING VALUES:
    		FORM TYPE:		N-CSR
    		SEC ACT:		1940 Act
    		SEC FILE NUMBER:	811-07626
    		FILM NUMBER:		221050762

    	BUSINESS ADDRESS:
    		STREET 1:		ONE POST OFFICE SQUARE
    		CITY:			BOSTON
    		STATE:			MA
    		ZIP:			02109
    		BUSINESS PHONE:		6172921000

    	MAIL ADDRESS:
    		STREET 1:		ONE POST OFFICE SQUARE
    		CITY:			BOSTON
    		STATE:			MA
    		ZIP:			02109
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>N-CSR
    <SEQUENCE>1
    <FILENAME>a_muniopps.htm
    <DESCRIPTION>PUTNAM MUNICIPAL OPPORTUNITIES TRUST
    <TEXT>
    Document 1 - file: a_muniopps.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99
    <SEQUENCE>2
    <FILENAME>b_19anotice.htm
    <DESCRIPTION>19(A) NOTICES TO BENEFICIAL OWNERS
    <TEXT>
    Document 2 - file: b_19anotice.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.CERT
    <SEQUENCE>3
    <FILENAME>c_582certifications.htm
    <DESCRIPTION>CERTIFICATIONS
    <TEXT>
    Document 3 - file: c_582certifications.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.906 CERT
    <SEQUENCE>4
    <FILENAME>d_582noscertification.htm
    <DESCRIPTION>906 CERTIFICATIONS
    <TEXT>
    Document 4 - file: d_582noscertification.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>anotice19x1x1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 5 - file: anotice19x1x1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>munioppsx1x1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 6 - file: munioppsx1x1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>munioppsx3x1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 7 - file: munioppsx3x1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>munioppsx4x1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 8 - file: munioppsx4x1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>munioppsx4x2.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 9 - file: munioppsx4x2.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>munioppsx5x1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 10 - file: munioppsx5x1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>munioppsx6x1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 11 - file: munioppsx6x1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>12
    <FILENAME>munioppsx6x2.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 12 - file: munioppsx6x2.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>13
    <FILENAME>munioppsx7x1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 13 - file: munioppsx7x1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>14
    <FILENAME>munioppsx7x2.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 14 - file: munioppsx7x2.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>15
    <FILENAME>munioppsx8x1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 15 - file: munioppsx8x1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>16
    <FILENAME>munioppsx8x2.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 16 - file: munioppsx8x2.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>17
    <FILENAME>munioppsx9x1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 17 - file: munioppsx9x1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>18
    <FILENAME>munioppsx10x1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 18 - file: munioppsx10x1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>19
    <FILENAME>munioppsx11x1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 19 - file: munioppsx11x1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>20
    <FILENAME>munioppsx12x1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 20 - file: munioppsx12x1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>21
    <FILENAME>munioppsx60x1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 21 - file: munioppsx60x1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>22
    <FILENAME>munioppsx61x1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 22 - file: munioppsx61x1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>23
    <FILENAME>munioppsx64x1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 23 - file: munioppsx64x1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.CODE ETH
    <SEQUENCE>24
    <FILENAME>a_picoemod4.htm
    <TEXT>
    Document 24 - file: a_picoemod4.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.CODE ETH
    <SEQUENCE>25
    <FILENAME>a_nf69mod9.htm
    <TEXT>
    Document 25 - file: a_nf69mod9.htm

    </DOCUMENT>
    </SEC-DOCUMENT>