## EXHIBIT 32.1 Certification of Chief Executive Officer of Cigna Corporation pursuant to 18 U.S.C. Section 1350 

I certify that, to the best of my knowledge and belief, the Annual Report on Form 10-K of Cigna Corporation for the fiscal period ending December 31, 2012 (the ‘‘Report’’): 

complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and (1) 

the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of Cigna Corporation. (2) 

/s/ David M. Cordani 

David M. Cordani Chief Executive Officer February 28, 2013 

