CERTIFICATION
I, Maureen R. Ford, certify that

1. I have  reviewed  this report on amended Form N-CSR of the John Hancock World
Fund (the "registrant");

2. Based on my knowledge, this report does not contain any untrue statement of a
material fact or omit to state a material fact necessary to make the statements
made, in light of the circumstances under which such statements were made, not
misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial
information included in this report, fairly present in all material respects the
financial condition, results of operations, changes in net assets, and cash
flows (if the financial statements are required to include a statement of cash
flows) of the registrant as of, and for, the periods presented in this report;

4. The registrant's other certifying officer and I are responsible for
establishing and maintaining disclosure controls and procedures (as defined in
Rule 30a-2(c) under the Investment Company Act) for the registrant and have:

a) designed such disclosure controls and procedures to ensure that material
information relating to the registrant, including its consolidated subsidiaries,
is made known to us by others within those entities, particularly during the
period in which this report is being prepared; b) evaluated the effectiveness of
the registrant's disclosure controls and procedures as of a date within 90 days
prior to the filing date of this report (the "Evaluation Date"); and c)
presented in this report our conclusions about the effectiveness of the
disclosure controls and procedures based on our evaluation as of the Evaluation
Date;

5. The registrant's other certifying officer and I have disclosed, based on our
most recent evaluation, to the registrant's auditors and the audit committee of
the registrant's board of trustees:

a) all significant deficiencies in the design or operation of internal controls
which could adversely affect the registrant's ability to record, process,
summarize, and report financial data and have identified for the registrant's
auditors any material weaknesses in internal controls; and b) any fraud, whether
or not material, that involves management or other employees who have a
significant role in the registrant's internal controls; and

6. The registrant's other certifying officer and I have indicated in this report
whether or not there were significant changes in internal controls or in other
factors that could significantly affect internal controls subsequent to the date
of our most recent evaluation, including any corrective actions with regard to
significant deficiencies and material weaknesses.



Date: _____________      _________________________
Maureen R. Ford
Chairman, President
and Chief Executive Officer


CERTIFICATION
I, Richard A. Brown, certify that

1. I have  reviewed  this report on amended Form N-CSR of the John Hancock World
Fund (the "registrant");

2. Based on my knowledge, this report does not contain any untrue statement of a
material fact or omit to state a material fact necessary to make the statements
made, in light of the circumstances under which such statements were made, not
misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial
information included in this report, fairly present in all material respects the
financial condition, results of operations, changes in net assets, and cash
flows (if the financial statements are required to include a statement of cash
flows) of the registrant as of, and for, the periods presented in this report;

4. The registrant's other certifying officer and I are responsible for
establishing and maintaining disclosure controls and procedures (as defined in
Rule 30a-2(c) under the Investment Company Act) for the registrant and have:

a) designed such disclosure controls and procedures to ensure that material
information relating to the registrant, including its consolidated subsidiaries,
is made known to us by others within those entities, particularly during the
period in which this report is being prepared; b) evaluated the effectiveness of
the registrant's disclosure controls and procedures as of a date within 90 days
prior to the filing date of this report (the "Evaluation Date"); and c)
presented in this report our conclusions about the effectiveness of the
disclosure controls and procedures based on our evaluation as of the Evaluation
Date;

5. The registrant's other certifying officer and I have disclosed, based on our
most recent evaluation, to the registrant's auditors and the audit committee of
the registrant's board of trustees:

a) all significant deficiencies in the design or operation of internal controls
which could adversely affect the registrant's ability to record, process,
summarize, and report financial data and have identified for the registrant's
auditors any material weaknesses in internal controls; and b) any fraud, whether
or not material, that involves management or other employees who have a
significant role in the registrant's internal controls; and

6. The registrant's other certifying officer and I have indicated in this report
whether or not there were significant changes in internal controls or in other
factors that could significantly affect internal controls subsequent to the date
of our most recent evaluation, including any corrective actions with regard to
significant deficiencies and material weaknesses.



Date: _____________      _________________________
Richard A. Brown
Senior Vice President
and Chief Financial Officer