Exhibit 31.1
 VANGENT, INC.
CERTIFICATION OF CHIEF EXECUTIVE OFFICER
  1.
    
    I have reviewed this quarterly report on Form 10-Q 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.
 /s/ John M. CurtisMay 17, 2011
    John M. CurtisPresident and Chief Executive Officer