Exhibit 31

Certification of Chief Executive Officer

XL Group Ltd

Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

(Chapter 98, Title 15 U.S.C. 7241)

I, Michael S. McGavick, certify that:

1. I have reviewed this Annual Report on Form 10-K/A of XL Group Ltd;

2. Based on my knowledge, this 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 report;

Dated:	April 6, 2018
		/s/ MICHAEL S. MCGAVICK
		Michael S. McGavick
		Chief Executive Officer

Certification of Chief Financial Officer

XL Group Ltd

Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

(Chapter 98, Title 15 U.S.C. 7241)

I, Stephen Robb, certify that:

1. I have reviewed this Annual Report on Form 10-K/A of XL Group Ltd;

2. Based on my knowledge, this 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 report;

Dated:	April 6, 2018
		/s/ STEPHEN ROBB
		Stephen Robb
		Executive Vice President and
		Chief Financial Officer