Yes.  However, you must be filing a joint return.  If you are filing as Married Filing Separately, you cannot deduct contributions made to your spouse's IRA.

For more information on IRAs:

Can I take an IRA Deduction for the amount I contributed to a 401(k) plan last year? 

What is a 5498 IRA Contribution? 

Special Charitable Contributions for Certain IRA Owners