<PAGE>      PAGE  1
000 B000000 06/30/2013
000 C000000 0000276776
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 6.1
000 J000000 A
001 A000000 PIONEER BOND FUND
001 B000000 811-02864
001 C000000 6177427825
002 A000000 60 STATE STREET
002 B000000 BOSTON
002 C000000 MA
002 D010000 02109
002 D020000 1820
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 PIONEER INVESTMENT MANAGEMENT, INC.
008 B000001 A
008 C000001 801-8255
008 D010001 BOSTON
008 D020001 MA
008 D030001 02109
008 D040001 1820
010 A000001 PIONEER INVESTMENT MANAGEMENT, INC.
010 B000001 801-8255
010 C010001 BOSTON
010 C020001 MA
010 C030001 02109
010 C040001 1820
011 A000001 PIONEER FUNDS DISTRIBUTOR, INC.
011 B000001 8-41256
011 C010001 BOSTON
011 C020001 MA
011 C030001 02109
<PAGE>      PAGE  2
011 C040001 1820
012 A000001 PIONEER INVESTMENT MGT SHAREHOLDER SERVICES
012 B000001 84-1359
012 C010001 BOSTON
012 C020001 MA
012 C030001 02109
012 C040001 1820
013 A000001 ERNST AND YOUNG LLP
013 B010001 BOSTON
013 B020001 MA
013 B030001 02116
013 B040001 5072
015 A000001 BROWN BROTHERS HARRIMAN & CO.
015 B000001 C
015 C010001 BOSTON
015 C020001 MA
015 C030001 02109
015 C040001 1975
015 E010001 X
018  000000 Y
019 A000000 Y
019 B000000   52
019 C000000 PIONEERFDS
020 A000001 JP MORGAN CLEARING CORP
020 C000001      2
020 A000002 HARRISS NESBITT CORP.
020 C000002      2
020 A000003 WELLS FARGO SECURITIES LLC
020 C000003      2
020 A000004 ITG INC.
020 C000004      1
020 A000005 UBS SECURITIES LLC
020 C000005      1
020 A000006 NATL FINANCIAL SERVICES CORP.
020 C000006      1
020 A000007 PERSHING LLC
020 C000007      1
020 A000008 GOLDMAN SACHS EXECUTION
020 C000008      1
020 A000009 CITIGROUP GLOBAL MARKETS INC.
020 C000009      1
020 A000010 DEUTSCHE BANK SECURITIES INC.
020 C000010      0
021  000000       13
022 A000001 RBC
022 C000001   5404900
022 D000001         0
022 A000002 DEUTSCHE-BANK SECURITIES INC.
022 C000002   1664012
022 D000002      1191
022 A000003 JP MORGAN CHASE BANK
<PAGE>      PAGE  3
022 C000003   1425515
022 D000003         0
022 A000004 SCOTIA BANK
022 C000004   1090530
022 D000004         0
022 A000005 TORONTO DOMINION SECURITIES
022 C000005    990845
022 D000005         0
022 A000006 PERSHING LLC
022 C000006     73798
022 D000006     17279
022 A000007 JP MORGAN SECURITIES FIXED INCOME
022 C000007     69402
022 D000007     20371
022 A000008 RBC CAPITAL MARKETS
022 C000008     51675
022 D000008      4763
022 A000009 BARCLAYS CAPITAL INC.
022 C000009     45463
022 D000009      3865
022 A000010 JEFFERIES & COMPANY INC.
022 C000010     41176
022 D000010      1594
023 C000000   11208393
023 D000000     153834
024  000000 Y
025 A000001 ALTERRA FINANCE LLC
025 C000001 D
025 D000001    3425
025 A000002 BANK OF AMERICA
025 C000002 D
025 D000002    1217
025 A000003 CITIGROUP, INC.
025 C000003 D
025 D000003    4896
025 A000004 CANTOR FITZGERALD
025 C000004 D
025 D000004    5326
025 A000005 EATON VANCE CORP.
025 C000005 D
025 D000005     844
025 A000006 JANUS CAPITAL CORP.
025 C000006 D
025 D000006    4522
025 A000007 THE BANK OF NEW YORK MELLON CORP.
025 C000007 D
025 D000007    3312
025 A000008 GOLDMAN SACHS CAPITAL II
025 C000008 D
025 D000008    8777
025 A000009 JEFFERIES GROUP, INC.
<PAGE>      PAGE  4
025 C000009 D
025 D000009    6457
025 A000010 JPMORGAN CHASE & CO.
025 C000010 D
025 D000010    9877
025 A000011 MACQUARIE GROUP LTD.
025 C000011 D
025 D000011    2835
025 A000012 UBS AG
025 C000012 D
025 D000012    1591
025 A000013 MERRILL LYNCH & CO., INC.
025 C000013 D
025 D000013    5201
025 A000014 QUEEN STREET IV CAPITAL LTD
025 C000014 D
025 D000014     508
025 A000015 DELETE
025 D000015       0
025 A000016 MORGAN STANLEY
025 C000016 D
025 D000016    8363
025 A000017 DELETE
025 D000017       0
025 A000018 DELETE
025 D000018       0
025 A000019 QUEEN STREET II CAPITAL LTD.
025 C000019 D
025 D000019     754
025 A000020 SCOTTRADE FIANCIAL SERVICES, INC.
025 C000020 D
025 D000020    4646
025 A000021 THE GOLDMAN SACHS GROUP, INC.
025 C000021 D
025 D000021    2114
025 D000022       0
025 D000023       0
025 D000024       0
025 D000025       0
025 D000026       0
025 D000027       0
025 D000028       0
025 D000029       0
025 D000030       0
025 D000031       0
025 D000032       0
026 A000000 N
026 B000000 N
026 C000000 N
026 D000000 Y
026 E000000 N
<PAGE>      PAGE  5
026 F000000 N
026 G010000 N
026 G020000 N
026 H000000 N
027  000000 Y
028 A010000     55042
028 A020000      3901
028 A030000         0
028 A040000     46332
028 B010000     44885
028 B020000      3784
028 B030000         0
028 B040000     54140
028 C010000     82498
028 C020000      3665
028 C030000         0
028 C040000     43220
028 D010000     44637
028 D020000      3789
028 D030000         0
028 D040000     31822
028 E010000     41503
028 E020000      3839
028 E030000         0
028 E040000     40747
028 F010000     34049
028 F020000      3961
028 F030000         0
028 F040000     83493
028 G010000    302614
028 G020000     22939
028 G030000         0
028 G040000    299754
028 H000000     88671
029  000000 Y
030 A000000    720
030 B000000  4.50
030 C000000  0.00
031 A000000    108
031 B000000      0
032  000000    612
033  000000      0
034  000000 Y
035  000000     23
036 A000000 N
036 B000000      0
037  000000 N
038  000000      0
039  000000 Y
040  000000 Y
041  000000 Y
<PAGE>      PAGE  6
042 A000000   0
042 B000000   0
042 C000000   0
042 D000000 100
042 E000000   0
042 F000000   0
042 G000000   0
042 H000000   0
043  000000   2561
044  000000      0
045  000000 Y
046  000000 N
047  000000 Y
048  000000  0.000
048 A010000  1000000
048 A020000 0.500
048 B010000  1000000
048 B020000 0.450
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
048 J010000        0
048 J020000 0.000
048 K010000  2000000
048 K020000 0.400
049  000000 N
050  000000 N
051  000000 N
052  000000 N
053 A000000 Y
053 B000000 Y
053 C000000 N
054 A000000 Y
054 B000000 N
054 C000000 N
054 D000000 N
054 E000000 N
054 F000000 N
054 G000000 N
054 H000000 Y
<PAGE>      PAGE  7
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 N
056  000000 Y
057  000000 N
058 A000000 N
059  000000 Y
060 A000000 Y
060 B000000 Y
061  000000     1000
062 A000000 Y
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
062 K000000   0.0
062 L000000   0.0
062 M000000   0.0
062 N000000  19.4
062 O000000   6.9
062 P000000  36.1
062 Q000000  33.5
062 R000000   2.4
063 A000000   0
063 B000000  7.6
064 A000000 N
064 B000000 N
066 A000000 N
067  000000 N
068 A000000 N
068 B000000 N
069  000000 N
070 A010000 Y
070 A020000 Y
070 B010000 Y
070 B020000 N
070 C010000 Y
070 C020000 N
070 D010000 Y
070 D020000 N
<PAGE>      PAGE  8
070 E010000 Y
070 E020000 Y
070 F010000 Y
070 F020000 N
070 G010000 Y
070 G020000 N
070 H010000 Y
070 H020000 N
070 I010000 N
070 I020000 N
070 J010000 Y
070 J020000 Y
070 K010000 Y
070 K020000 N
070 L010000 Y
070 L020000 N
070 M010000 Y
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    693398
071 B000000    427564
071 C000000   1533369
071 D000000   28
072 A000000 12
072 B000000    71728
072 C000000     2023
072 D000000        0
072 E000000        0
072 F000000     7667
072 G000000      463
072 H000000        0
072 I000000      491
072 J000000      145
072 K000000        0
072 L000000       49
072 M000000       66
072 N000000      254
072 O000000        0
072 P000000        0
072 Q000000        0
072 R000000       56
072 S000000       67
<PAGE>      PAGE  9
072 T000000     2561
072 U000000        0
072 V000000        0
072 W000000     1984
072 X000000    13803
072 Y000000      906
072 Z000000    60854
072AA000000        0
072BB000000      151
072CC010000        0
072CC020000    14758
072DD010000    19971
072DD020000    41287
072EE000000        0
073 A010000   0.0000
073 A020000   0.0000
073 B000000   0.0000
073 C000000   0.0000
074 A000000    15340
074 B000000        0
074 C000000        0
074 D000000  1550266
074 E000000    38120
074 F000000        0
074 G000000        0
074 H000000        0
074 I000000      860
074 J000000    56483
074 K000000      215
074 L000000    16629
074 M000000       22
074 N000000  1677935
074 O000000    38471
074 P000000      388
074 Q000000        0
074 R010000        0
074 R020000        0
074 R030000        0
074 R040000    23690
074 S000000        0
074 T000000  1615386
074 U010000    58469
074 U020000   109501
074 V010000     0.00
074 V020000     0.00
074 W000000   0.0000
074 X000000    12642
074 Y000000        0
075 A000000        0
075 B000000  1592599
076  000000     0.00
<PAGE>      PAGE  10
077 A000000 Y
077 B000000 Y
077 C000000 N
077 D000000 N
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 N
077 P000000 N
077 Q010000 N
077 Q020000 N
077 Q030000 N
078  000000 N
080 A000000 ICI MUTUAL INSURANCE CO.
080 B000000 NONE
080 C000000    45000
081 A000000 Y
081 B000000  52
082 A000000 N
082 B000000        0
083 A000000 N
083 B000000        0
084 A000000 N
084 B000000        0
085 A000000 Y
085 B000000 N
086 A010000      0
086 A020000      0
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
SIGNATURE   MARK E BRADLEY
TITLE       TREASURER