Exhibit 31.1

CERTIFICATION PURSUANT TO RULE 13a-14(a) OF THE EXCHANGE ACT

I Vikram Gulati certify that:

|   | 1.     | I have reviewed this   Quarterly Report on Form 10-Q of Intelligroup, Inc.;                                                                                                                                                                                                                                                            |
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|   | 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; |
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|   | 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;                    |
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|   | 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:                                                                                              |
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|   |   | a.                                                                                                                                                                                                                                                                                                                                     | designed such disclosure   controls and procedures, or have 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 Quarterly Report is being   prepared; |
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|   |   | b.                                                                                                                                                                                                                                                                                                                                     | [Paragraph omitted in   accordance with SEC transition instructions contained in SEC Release   34-47986.] |
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|   |   | c.                                                                                                                                                                                                                                                                                                                                     | evaluated the effectiveness   of the registrant’s disclosure controls and procedures and presented in this   Quarterly Report our conclusions about the effectiveness of the disclosure   controls and procedures, as of the period covered by this report based on   such evaluation; and |
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|   |   | d.                                                                                                                                                                                                                                                                                                                                     | disclosed in this Quarterly   Report any change in the registrant’s internal control over financial   reporting that occurred during the quarter ended September 30, 2006 that has   materially affected, or is reasonably likely to materially affect, the   registrant’s internal control over financial reporting; |
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|   | 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 function):                  |
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|   |   | 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; and |
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|   |   | b.                                                                                                                                                                                                                                                                                                                                     | any fraud, whether or not   material, that involves management or other employees who have a significant   role in the registrant’s internal controls over financial reporting. |

| DATE:  March 28,   2007 | By:    | /s/ Vikram Gulati       |
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|                              |   |                         |
|                              |   | Vikram Gulati           |
|                              |   | Chief Executive Officer |