Exhibit 31.1
 VANGENT, INC.
CERTIFICATION OF CHIEF EXECUTIVE OFFICER
  1.
    
    I have reviewed this quarterly report on Form 10-Q for the three months ended March 28, 2009, of Vangent, Inc.;2.
    
    Based on my knowledge, this quarterly 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 quarterly report;3.
    
    Based on my knowledge, the financial statements, and other financial information included in this quarterly 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 quarterly report;4.
    
    The registrants other certifying officer 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)
    
    designed such internal control over financial
reporting, or caused such internal control over
financial reporting to be designed under our
supervision, to provide reasonable assurance regarding
the reliability of financial reporting and the
preparation of financial statements for external
purposes in accordance with accounting principles
generally accepted in the United States of America;c)
    
    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 of the end
of the period covered by this report based on such
evaluation; andd)
    
    disclosed in this report 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 officer 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 performing the equivalent functions):
 a)
    
    all significant deficiencies and material weaknesses in
the design or operation of internal controls over
financial reporting which are reasonably likely to
adversely affect the registrants ability to record,
process, summarize and report financial information;
andb)
    
    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.
 May 6, 2009
    
    /s/ John M. CurtisJohn M. CurtisPresident and Chief Executive Officer