Exhibit 12.1



CERTIFICATION



I, Yong-Kyung Lee, certify that:



1. I have reviewed this annual report on Form 20-F of KT Corporation;



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 and cash flows of the company as of, and for, the periods presented in this report;



4. The companys other certifying officer(s) and I are
responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) for the company and have:



a. Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be
designed under our supervision, to ensure that material information relating to the company, 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 companys disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and



c. Disclosed in this report any change in the
companys internal control over financial reporting that occurred during the period covered by the annual report that has materially affected, or is reasonably likely to materially affect, the companys internal control over financial
reporting; and



5. The companys other
certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the companys auditors and the audit committee of the companys board of directors (or persons performing the
equivalent functions):



a. All significant
deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the companys ability to record, process, summarize and report financial information;
and



b. Any fraud, whether or not material,
that involves management or other employees who have a significant role in the companys internal control over financial reporting.



Date: June 25, 2004

/s/ Yong-Kyung LeeYong-Kyung Lee Chief Executive Officer




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Exhibit 12.1



CERTIFICATION



I, Jeong-Soo Suh, certify that:



1. I have reviewed this annual report on Form 20-F of KT Corporation;



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 and cash flows of the company as of, and for, the periods presented in this report;



4. The companys other certifying officer(s) and I are
responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) for the company and have:



a. Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be
designed under our supervision, to ensure that material information relating to the company, 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 companys disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and



c. Disclosed in this report any change in the
companys internal control over financial reporting that occurred during the period covered by the annual report that has materially affected, or is reasonably likely to materially affect, the companys internal control over financial
reporting; and



5. The companys other
certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the companys auditors and the audit committee of the companys board of directors (or persons performing the
equivalent functions):



a. All significant
deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the companys ability to record, process, summarize and report financial information;
and



b. Any fraud, whether or not material,
that involves management or other employees who have a significant role in the companys internal control over financial reporting.



Date: June 25, 2004

/s/ Jeong-Soo SuhJeong-Soo Suh Chief Financial Officer