**Exhibit 31.2**

**CERTIFICATION of CFO**

 

I, William W. Boyle, certify that:

 

1)              I have reviewedthis quarterly report on Form 10-Q of Cubic Corporation;

 

2)              Based on myknowledge, this report does not contain any untrue statement of a material factor omit to state a material fact necessary to make the statements made, inlight of the circumstances under which such statements were made, notmisleading with respect to the period covered by this report;

 

3)              Based on myknowledge, the financial statements, and other financial information includedin this  report, fairly present in allmaterial respects the financial condition, results of operations and cash flowsof the registrant as of, and for, the periods presented in this  report;

 

4)              The registrant’sother certifying officers and I are responsible for establishing andmaintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and15d-15(e)) and internal control over financial reporting (as defined inExchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and wehave:

 

a)              Designed such disclosure controls andprocedures, or caused such disclosure controls and procedures to be designedunder our supervision, to ensure that material information relating to theregistrant, including its consolidated subsidiaries, is made known to us byothers within those entities, particularly during the period in which thisreport is being prepared;

 

b)             Designed such internal control overfinancial reporting, or caused such internal control over financial reportingto be designed under our supervision, to provide reasonable assurance regardingthe reliability of financial reporting and the preparation of financialstatements for external purposes in accordance with generally acceptedaccounting principles;

 

c)              Evaluated the effectiveness of theregistrant’s disclosure controls and procedures and presented in this reportour conclusions about the effectiveness of the disclosure controls andprocedures, as of the end of the period covered by this report based on suchevaluation; and

 

d)             Disclosed in this report any change inthe registrant’s internal control over financial reporting that occurred duringthe registrant’s most recent fiscal quarter (the registrant’s fourth fiscalquarter in the case of an annual report) that has materially affected, or isreasonably likely to materially affect, the registrant’s internal control overfinancial reporting; and

 

5)              The registrant’sother certifying officers and I have disclosed, based on our most recent evaluationof the internal control over financial reporting, to the registrant’s auditorsand the audit committee of registrant’s board of directors (or personsperforming the equivalent function):

 

a)              All significantdeficiencies and material weaknesses in the design or operation of internalcontrols over financial reporting which are reasonably likely to adverselyaffect the registrant’s ability to record, process, summarize and reportfinancial information; and

 

b)             Any fraud,whether or not material, that involves management or other employees who have asignificant role in the registrant’s internal controls over financialreporting.

 
| May 5, 2009         |   |
|--------------------------|--------|
|                     |   |
| /s/ W. W. Boyle          |   |
| W. W. Boyle              |   |
| Chief Financial  Officer |   |

 

----