PAGE  1
000 A000000 04/30/2014
000 C000000 0001285650
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 6.1
000 J000000 A
001 A000000 Calamos Global Total Return Fund
001 B000000 811-21547
001 C000000 6302457200
002 A000000 2020 Calamos Court
002 B000000 Naperville
002 C000000 IL
002 D010000 60563
003  000000 N
004  000000 N
005  000000 N
006  000000 N
007 A000000 N
007 B000000  0
007 C010100  1
008 A000001 CALAMOS ADVISORS LLC
008 B000001 A
008 C000001 801-29688
008 D010001 NAPERVILLE
008 D020001 IL
008 D030001 60563
010 A000001 State Street Bank and Trust Company
010 B000001 028-00733
010 C010001 Boston
010 C020001 MA
010 C030001 02111
012 A000001 COMPUTERSHARE
012 B000001 85-05006
012 C010001 College Station
012 C020001 TX
012 C030001 77842
012 C040001 3170
013 A000001 Deloitte & Touche LLP
013 B010001 Chicago
013 B020001 IL
013 B030001 60606
014 A000001 CALAMOS FINANCIAL SERVICES LLC
014 B000001 8-37854
015 A000001 STATE STREET BANK AND TRUST COMPANY
015 B000001 C
015 C010001 BOSTON
015 C020001 MA
015 C030001 02111
      PAGE  2
015 E010001 X
015 A000002 HSBC AUSTRALIA
015 B000002 S
015 C010002 MELBOURNE
015 D010002 AUSTRALIA
015 E040002 X
015 A000003 CANADA SELF CUSTODY-CDSX DEBT CLEARING SYSTEM
015 B000003 S
015 C010003 TORONTO
015 D010003 CANADA
015 E040003 X
015 A000004 CLEARSTREAM BANKING S.A.
015 B000004 S
015 C010004 LUXEMBOURG
015 D010004 LUXEMBOURG
015 E040004 X
015 A000005 UBS AG
015 B000005 S
015 C010005 Zurich
015 D010005 SWITZERLAND
015 E040005 X
015 A000006 DEUTSCHE BANK AG FRANKFURT
015 B000006 S
015 C010006 FRANKFURT
015 D010006 GERMANY
015 E040006 X
015 A000007 SKANDINAVISKA ENSKILDA BANKEN
015 B000007 S
015 C010007 COPENHAGEN
015 D010007 DENMARK
015 E040007 X
015 A000008 EUROCLEAR
015 B000008 S
015 C010008 BRUSSELLS
015 D010008 BELGIUM
015 E040008 X
015 A000009 STATE STREET BANK LONDON-CREST STD CHRTD BANK
015 B000009 S
015 C010009 LONDON
015 D010009 UNITED KINGDOM
015 E040009 X
015 A000010 STANDARD CHARTERED BANK
015 B000010 S
015 C010010 HONG KONG
015 D010010 HONG KONG
015 E040010 X
015 A000011 MIZUHO COPRORATE BANK, LTD.
015 B000011 S
015 C010011 TOKYO
015 D010011 JAPAN
015 E040011 X
      PAGE  3
015 A000012 DEUTSCHE BANK AG
015 B000012 S
015 C010012 SEOUL
015 D010012 Republic of Korea
015 E040012 X
015 A000013 DEUTSCHE BANK AG, NETHERLANDS
015 B000013 S
015 C010013 AMSTERDAM
015 D010013 THE NETHERLANDS
015 E040013 X
015 A000014 SKANDINAVISKA ENSKILDA BANKEN AB
015 B000014 S
015 C010014 OSLO
015 D010014 NORWAY
015 E040014 X
015 A000015 SKANDINAVISKA ENSKILDA BANKEN AB
015 B000015 S
015 C010015 STOCKHOLM
015 D010015 SWEDEN
015 D020015 SE-106 40
015 E040015 X
015 A000016 CITIBANK SINGAPORE
015 B000016 S
015 C010016 SINGAPORE
015 D010016 SINGAPORE
015 E040016 X
015 A000017 STANDARD CHARTERED BANK
015 B000017 S
015 C010017 TAIPEI
015 D010017 TAIWAN
015 E040017 X
015 A000018 FIRSTRAND BANK LIMITED
015 B000018 S
015 C010018 JOHANNESBURG
015 D010018 SOUTH AFRICA
015 D020018 2001
015 E040018 X
018  000000 Y
019 A000000 Y
019 B000000   23
019 C000000 CALAMOSINV
020 A000001 CITIGROUP, INC.
020 B000001 11-2418191
020 C000001     13
020 A000002 JPMORGAN CHASE SECURITIES, INC.
020 B000002 13-3224016
020 C000002     12
020 A000003 SUSQUEHANNA INVESTMENT GROUP
020 B000003 23-2454154
020 C000003      8
020 A000004 Barclays Capital, Inc.
      PAGE  4
020 B000004 94-3231066
020 C000004      5
020 A000005 BANK OF AMERICA
020 B000005 56-0906609
020 C000005      3
020 A000006 GOLDMAN SACHS & CO.
020 B000006 13-5108880
020 C000006      3
020 A000007 BANK OF MONTREAL
020 B000007 13-4941092
020 C000007      3
020 A000008 Societe Generale
020 B000008 13-3557071
020 C000008      2
020 A000009 SCOTIA CAPITAL (USA) INC.
020 B000009 13-5239583
020 C000009      2
020 A000010 DAIWA CAPITAL MARKETS AMERICA, INC.
020 B000010 13-5680329
020 C000010      2
021  000000       64
022 A000001 BANK OF AMERICA
022 B000001 56-0906609
022 C000001      7919
022 D000001      6080
022 A000002 BNP PARIBAS
022 B000002 13-1929559
022 C000002      2431
022 D000002      6396
022 A000003 NOMURA SECURITIES INTERNATIONAL, INC.
022 B000003 13-2642206
022 C000003      4989
022 D000003      2455
022 A000004 CITIGROUP, INC.
022 B000004 11-2418191
022 C000004      3004
022 D000004      3664
022 A000005 CREDIT SUISSE FIRST BOSTON
022 B000005 13-2853402
022 C000005      2923
022 D000005      3308
022 A000006 GOLDMAN SACHS & CO.
022 B000006 13-5108880
022 C000006      3946
022 D000006      1187
022 A000007 JPMORGAN CHASE SECURITIES, INC.
022 B000007 13-3224016
022 C000007      1951
022 D000007      2933
022 A000008 Barclays Capital, Inc.
022 B000008 94-3231066
      PAGE  5
022 C000008      2594
022 D000008      1994
022 A000009 BANK OF NEW YORK
022 B000009 13-3989198
022 C000009      1745
022 D000009      1358
022 A000010 EXANE S.A.
022 B000010 13-3901039
022 C000010      1260
022 D000010       958
023 C000000      37992
023 D000000      35546
024  000000 Y
025 A000001 CITIGROUP, INC.
025 B000001 11-2418191
025 C000001 E
025 D000001    2472
025 A000002 DAIWA CAPITAL MARKETS AMERICA, INC.
025 B000002 13-5680329
025 C000002 E
025 D000002     787
025 A000003 JPMORGAN CHASE SECURITIES, INC.
025 B000003 13-3224016
025 C000003 E
025 D000003    2575
025 A000004 CREDIT SUISSE FIRST BOSTON
025 B000004 13-2853402
025 C000004 E
025 D000004     147
026 A000000 N
026 B000000 Y
026 C000000 N
026 D000000 Y
026 E000000 N
026 F000000 N
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
      PAGE  6
028 D010000         0
028 D020000         0
028 D030000         0
028 D040000         0
028 E010000         0
028 E020000        45
028 E030000         0
028 E040000         0
028 F010000         0
028 F020000        45
028 F030000         0
028 F040000         0
028 G010000         0
028 G020000        90
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  1.000
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
      PAGE  7
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
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 Y
054 C000000 N
054 D000000 N
054 E000000 N
054 F000000 N
054 G000000 N
054 H000000 Y
054 I000000 N
054 J000000 Y
054 K000000 N
054 L000000 N
054 M000000 Y
054 N000000 N
054 O000000 N
055 A000000 N
055 B000000 Y
056  000000 Y
057  000000 N
058 A000000 N
059  000000 Y
060 A000000 Y
060 B000000 Y
061  000000        0
062 A000000 N
062 B000000   0.0
062 C000000   0.0
062 D000000   0.0
062 E000000   0.0
062 F000000   0.0
062 G000000   0.0
062 H000000   0.0
062 I000000   0.0
062 J000000   0.0
      PAGE  8
062 K000000   0.0
062 L000000   0.0
062 M000000   0.0
062 N000000   0.0
062 O000000   0.0
062 P000000   0.0
062 Q000000   0.0
062 R000000   0.0
063 A000000   0
063 B000000  0.0
066 A000000 Y
066 B000000 N
066 C000000 N
066 D000000 N
066 E000000 N
066 F000000 N
066 G000000 Y
067  000000 N
068 A000000 N
068 B000000 N
069  000000 N
070 A010000 Y
070 A020000 N
070 B010000 Y
070 B020000 Y
070 C010000 Y
070 C020000 N
070 D010000 Y
070 D020000 N
070 E010000 Y
070 E020000 N
070 F010000 Y
070 F020000 N
070 G010000 Y
070 G020000 N
070 H010000 Y
070 H020000 N
070 I010000 Y
070 I020000 N
070 J010000 Y
070 J020000 Y
070 K010000 Y
070 K020000 Y
070 L010000 Y
070 L020000 Y
070 M010000 Y
070 M020000 Y
070 N010000 Y
070 N020000 Y
070 O010000 Y
070 O020000 Y
      PAGE  9
070 P010000 Y
070 P020000 N
070 Q010000 N
070 Q020000 N
070 R010000 Y
070 R020000 N
071 A000000     72467
071 B000000     77955
071 C000000    166898
071 D000000   43
072 A000000  6
072 B000000     1167
072 C000000      941
072 D000000        0
072 E000000        3
072 F000000      854
072 G000000        0
072 H000000        0
072 I000000       12
072 J000000       16
072 K000000        0
072 L000000       23
072 M000000        9
072 N000000        1
072 O000000        0
072 P000000      197
072 Q000000       20
072 R000000       11
072 S000000        6
072 T000000        0
072 U000000        0
072 V000000        0
072 W000000       19
072 X000000     1166
072 Y000000        0
072 Z000000      945
072AA000000     3292
072BB000000      225
072CC010000     1228
072CC020000        0
072DD010000     5074
072DD020000        0
072EE000000        0
073 A010000   0.6000
073 A020000   0.0000
073 B000000   0.0000
073 C000000   0.0000
074 A000000      511
074 B000000        0
074 C000000      401
074 D000000    67760
      PAGE  10
074 E000000     5584
074 F000000    91060
074 G000000     2281
074 H000000        0
074 I000000     4271
074 J000000     2468
074 K000000        0
074 L000000      700
074 M000000       87
074 N000000   175123
074 O000000     2351
074 P000000      222
074 Q000000    49000
074 R010000        0
074 R020000        0
074 R030000        0
074 R040000      154
074 S000000        0
074 T000000   123396
074 U010000     8462
074 U020000        0
074 V010000    14.58
074 V020000     0.00
074 W000000   0.0000
074 X000000        5
074 Y000000   101546
075 A000000        0
075 B000000   123848
076  000000    14.80
077 A000000 N
078  000000 N
080 C000000        0
081 B000000   0
082 B000000        0
083 B000000        0
084 B000000        0
086 A010000      6
086 A020000     90
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 Stock
087 A020000 128118106
087 A030000 CGO
      PAGE  11
088 A000000 N
088 B000000 N
088 C000000 Y
088 D000000 N
SIGNATURE   CURTIS HOLLOWAY
TITLE       TREASURER