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                                                                    EXHIBIT 31.1

                    CERTIFICATION OF CHIEF EXECUTIVE OFFICER

I, D. Gregory Smith, certify that--

         1.       I have reviewed this Quarterly Report on Form 10-Q of Z-Tel
Technologies, Inc.;

         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 in order
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
registrant as of, and for, the periods presented in this report;

         4.       The registrant's other certifying officers 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 registrant
and we 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 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 and presented in this report our conclusions
about the effectiveness of the disclosure controls and procedures as the end of
the period covered by this report based on such evaluation; and

                  c)       Disclosed in this any change in the registrant's
internal control over financial reporting that occurred during the registrant's
most recent fiscal quarter (the registrant's fourth fiscal quarter in the case
of an annual report) that has materially affected, or is reasonably likely to
materially affect, the registrant's internal control over financial reporting;
and

         5.       The registrant's other certifying officers and I have
disclosed, based on our most recent evaluation of internal control over
financial reporting, to the registrant's auditors and the audit committee of the
registrant's board of directors (or persons fulfilling the equivalent
function)--

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                  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 registrant'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 registrant's
internal control over financial reporting.

Date:  May 17, 2004

                                          /s/ D. GREGORY SMITH
                                          -------------------------------------
                                          D. Gregory Smith
                                          Chief Executive Officer

         A signed original of this written statement has been provided to Z-Tel
Technologies, Inc. and will be retained by the Z-Tel Technologies, Inc. and
furnished to the Securities and Exchange Commission or its staff upon request