PAGE 1
000 B000000 10/31/2006
000 C000000 0000884152
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 6.1
000 J000000 A
001 A000000 VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
001 B000000 811-006567
001 C000000 2127625260
002 A000000 1221 AVENUE OF THE AMERICAS
002 B000000 NEW YORK
002 C000000 NY
002 D010000 10020
003 000000 N
004 000000 N
005 000000 N
006 000000 N
007 A000000 N
007 B000000 0
007 C010100 1
007 C010200 2
007 C010300 3
007 C010400 4
007 C010500 5
007 C010600 6
007 C010700 7
007 C010800 8
007 C010900 9
007 C011000 10
008 A000001 VAN KAMPEN ASSET MANAGEMENT
008 B000001 A
008 C000001 801-1669
008 D010001 NEW YORK
008 D020001 NY
008 D030001 10020
010 A000001 VAN KAMPEN INVESTMENTS INC.
010 B000001 8-19412
010 C010001 NEW YORK
010 C020001 NY
010 C030001 10020
012 A000001 COMPUTERSHARE TRUST COMPANY, N.A.
012 B000001 85-11340
012 C010001 PROVIDENCE
012 C020001 RI
012 C030001 02940
012 C040001 3011
013 A000001 DELOITTE & TOUCHE LLP
013 B010001 CHICAGO
PAGE 2
013 B020001 IL
013 B030001 60606
014 A000001 ARAB MALAYSIA SECURITIES
014 B000001 8-00000
014 A000002 CHINA INTERNATIONAL CAPITAL CORP. LTD
014 B000002 8-00000
014 A000003 HC SECURITIES
014 B000003 8-00000
014 A000004 JM MORGAN STANLEY FIXED INCOME SEC. PRIV. LTD
014 B000004 8-00000
014 A000005 JM MORGAN STANLEY PRIVATE LTD
014 B000005 8-00000
014 A000006 JM MORGAN STANLEY SECURITIES PRIVATE LTD
014 B000006 8-00000
014 A000007 JM MORGAN STANLEY RETAIL SERVICES PRIV. LTD
014 B000007 8-00000
014 A000008 MORGAN STANLEY & CO. INC.
014 B000008 8-15869
014 A000009 MORGAN STANLEY & CO. LTD
014 B000009 8-00000
014 A000010 MORGAN STANLEY ASIA LTD
014 B000010 8-00000
014 A000011 MORGAN STANLEY CANADA LTD
014 B000011 8-00000
014 A000012 MORGAN STANLEY QUILTER LTD
014 B000012 8-00000
014 A000013 MORGAN STANLEY DW AUSTRALIA SEC. LTD
014 B000013 8-00000
014 A000014 MORGAN STANLEY JAPAN LTD
014 B000014 8-00000
014 A000015 MORGAN STANLEY SV SA
014 B000015 8-00000
014 A000016 MORGAN STANLEY DW INC.
014 B000016 8-14172
014 A000017 MORGAN STANLEY INTERNATIONAL LTD
014 B000017 8-00000
014 A000018 MORGAN STANLEY SECURITIES LTD
014 B000018 8-00000
014 A000019 MORGAN STANLEY BANK AG
014 B000019 8-00000
014 A000020 MORGAN STANLEY DISTRIBUTION INC.
014 B000020 8-44766
014 A000021 MORGAN STANLEY DISTRIBUTORS INC.
014 B000021 8-45262
014 A000022 MORGAN STANLEY MARKET PRODUCTS INC.
014 B000022 8-37795
014 A000023 MS SECURITIES SERVICES INC.
014 B000023 8-26804
014 A000024 PRIME DEALER SERVICES CORP.
014 B000024 8-47025
014 A000025 VAN KAMPEN FUNDS INC.
PAGE 3
014 B000025 8-19412
015 A000001 STATE STREET BANK AND TRUST COMPANY
015 B000001 C
015 C010001 BOSTON
015 C020001 MA
015 C030001 02111
015 E010001 X
018 000000 Y
019 A000000 Y
019 B000000 71
019 C000000 VANKAMPENF
020 C000001 0
020 C000002 0
020 C000003 0
020 C000004 0
020 C000005 0
020 C000006 0
020 C000007 0
020 C000008 0
020 C000009 0
020 C000010 0
021 000000 0
022 A000001 CITIGROUP GLOBAL MARKETS INC.
022 B000001 13-3187336
022 C000001 102788
022 D000001 96859
022 A000002 MERRILL LYNCH, PIERCE, FENNER
022 B000002 13-5674085
022 C000002 84868
022 D000002 76816
022 A000003 UBS FINANCIAL SERVICES INC.
022 B000003 13-2932996
022 C000003 49882
022 D000003 44570
022 A000004 CHASE SECURITIES INC
022 B000004 13-2633612
022 C000004 15507
022 D000004 65730
022 A000005 FIRST ALBANY CAPITAL INC.
022 B000005 14-1391446
022 C000005 33201
022 D000005 31970
022 A000006 BEAR STEARNS & CO INC.
022 B000006 13-3299429
022 C000006 43733
022 D000006 6707
022 A000007 BANC OF AMERICA SECURITIES
022 B000007 56-2058405
022 C000007 13783
022 D000007 16797
022 A000008 MORGAN KEEGAN & CO INC.
PAGE 4
022 B000008 64-0474907
022 C000008 12267
022 D000008 2170
022 A000009 FUNB FUNDS II AND ASSOCIATES
022 C000009 8770
022 D000009 5109
022 A000010 STEPHENS, INC.
022 B000010 71-0211822
022 C000010 5686
022 D000010 2568
023 C000000 392636
023 D000000 374130
024 000000 N
025 D000001 0
025 D000002 0
025 D000003 0
025 D000004 0
025 D000005 0
025 D000006 0
025 D000007 0
025 D000008 0
026 A000000 N
026 B000000 Y
026 C000000 N
026 D000000 Y
026 E000000 N
026 F000000 Y
026 G010000 N
026 G020000 N
026 H000000 N
027 000000 N
028 A010000 0
028 A020000 0
028 A030000 0
028 A040000 0
028 B010000 0
028 B020000 0
028 B030000 0
028 B040000 0
028 C010000 0
028 C020000 0
028 C030000 0
028 C040000 0
028 D010000 0
028 D020000 0
028 D030000 0
028 D040000 0
028 E010000 0
028 E020000 0
028 E030000 0
028 E040000 0
PAGE 5
028 F010000 0
028 F020000 0
028 F030000 0
028 F040000 0
028 G010000 0
028 G020000 0
028 G030000 0
028 G040000 0
028 H000000 0
030 A000000 0
030 B000000 0.00
030 C000000 0.00
031 A000000 0
031 B000000 0
032 000000 0
033 000000 0
035 000000 0
036 B000000 0
038 000000 0
042 A000000 0
042 B000000 0
042 C000000 0
042 D000000 0
042 E000000 0
042 F000000 0
042 G000000 0
042 H000000 0
043 000000 0
044 000000 0
045 000000 Y
046 000000 N
047 000000 Y
048 000000 0.550
048 A010000 0
048 A020000 0.000
048 B010000 0
048 B020000 0.000
048 C010000 0
048 C020000 0.000
048 D010000 0
048 D020000 0.000
048 E010000 0
048 E020000 0.000
048 F010000 0
048 F020000 0.000
048 G010000 0
048 G020000 0.000
048 H010000 0
048 H020000 0.000
048 I010000 0
048 I020000 0.000
PAGE 6
048 J010000 0
048 J020000 0.000
048 K010000 0
048 K020000 0.000
049 000000 N
050 000000 N
051 000000 N
052 000000 N
053 A000000 N
054 A000000 Y
054 B000000 N
054 C000000 N
054 D000000 N
054 E000000 N
054 F000000 N
054 G000000 Y
054 H000000 Y
054 I000000 N
054 J000000 Y
054 K000000 N
054 L000000 N
054 M000000 Y
054 N000000 N
054 O000000 Y
055 A000000 Y
055 B000000 N
056 000000 N
057 000000 N
058 A000000 N
059 000000 Y
060 A000000 Y
060 B000000 Y
061 000000 0
062 A000000 Y
062 B000000 0.0
062 C000000 0.0
062 D000000 0.0
062 E000000 1.1
062 F000000 0.0
062 G000000 0.0
062 H000000 0.0
062 I000000 0.0
062 J000000 0.0
062 K000000 0.0
062 L000000 0.0
062 M000000 0.0
062 N000000 0.0
062 O000000 172.3
062 P000000 0.0
062 Q000000 0.0
062 R000000 0.0
PAGE 7
063 A000000 0
063 B000000 20.6
064 A000000 Y
064 B000000 N
066 A000000 N
067 000000 N
068 A000000 N
068 B000000 N
069 000000 N
070 A010000 Y
070 A020000 N
070 B010000 N
070 B020000 N
070 C010000 Y
070 C020000 N
070 D010000 N
070 D020000 N
070 E010000 Y
070 E020000 Y
070 F010000 N
070 F020000 N
070 G010000 Y
070 G020000 N
070 H010000 N
070 H020000 N
070 I010000 N
070 I020000 N
070 J010000 Y
070 J020000 Y
070 K010000 Y
070 K020000 N
070 L010000 N
070 L020000 N
070 M010000 N
070 M020000 N
070 N010000 Y
070 N020000 N
070 O010000 Y
070 O020000 N
070 P010000 Y
070 P020000 N
070 Q010000 N
070 Q020000 N
070 R010000 N
070 R020000 N
071 A000000 229450
071 B000000 155380
071 C000000 792995
071 D000000 20
072 A000000 12
072 B000000 39330
PAGE 8
072 C000000 0
072 D000000 0
072 E000000 0
072 F000000 4271
072 G000000 0
072 H000000 0
072 I000000 54
072 J000000 81
072 K000000 0
072 L000000 68
072 M000000 128
072 N000000 16
072 O000000 0
072 P000000 529
072 Q000000 126
072 R000000 33
072 S000000 90
072 T000000 0
072 U000000 0
072 V000000 0
072 W000000 1120
072 X000000 6516
072 Y000000 0
072 Z000000 32814
072AA000000 2558
072BB000000 0
072CC010000 11137
072CC020000 0
072DD010000 23611
072DD020000 0
072EE000000 5327
073 A010000 0.8100
073 A020000 0.0000
073 B000000 0.3500
073 C000000 0.0000
074 A000000 58
074 B000000 0
074 C000000 6200
074 D000000 978084
074 E000000 0
074 F000000 0
074 G000000 0
074 H000000 0
074 I000000 0
074 J000000 23123
074 K000000 0
074 L000000 14366
074 M000000 82
074 N000000 1021913
074 O000000 43314
074 P000000 455
PAGE 9
074 Q000000 0
074 R010000 0
074 R020000 0
074 R030000 0
074 R040000 70191
074 S000000 340414
074 T000000 567539
074 U010000 34173
074 U020000 0
074 V010000 16.61
074 V020000 0.00
074 W000000 0.0000
074 X000000 1652
074 Y000000 15023
075 A000000 0
075 B000000 772389
076 000000 14.70
077 A000000 Y
077 B000000 Y
077 C000000 N
077 D000000 Y
077 E000000 N
077 F000000 N
077 G000000 N
077 H000000 N
077 I000000 N
077 J000000 N
077 K000000 N
077 L000000 N
077 M000000 N
077 N000000 N
077 O000000 Y
077 P000000 N
077 Q010000 N
077 Q020000 N
077 Q030000 N
078 000000 N
080 A000000 ICI MUTUAL INSURANCE COMPANY
080 B000000 NONE
080 C000000 85000
081 A000000 Y
081 B000000 85
082 A000000 Y
082 B000000 500
083 A000000 N
083 B000000 0
084 A000000 N
084 B000000 0
085 A000000 Y
085 B000000 N
086 A010000 18815
PAGE 10
086 A020000 306870
086 B010000 0
086 B020000 0
086 C010000 0
086 C020000 0
086 D010000 0
086 D020000 0
086 E010000 0
086 E020000 0
086 F010000 0
086 F020000 0
087 A010000 COMMON
087 A020000 920935103
087 A030000 VMO
088 A000000 N
088 B000000 N
088 C000000 N
088 D000000 Y
SIGNATURE KATHERINE UREVIG
TITLE ASSISTANT TREASURER