Exhibit 5.2

Noble Holding International Limited

Suite 3D, Landmark Square

64 Earth Close

P.O. Box 31327

Georgetown, Grand Cayman

Cayman Islands, BWI

16 March 2015

Ladies and Gentlemen:

Noble Holding International Limited (the “Company”)

We have acted as Cayman Islands counsel to Noble Holding International Limited (the “Company”) in connection with the issue of US$250 million aggregate principal amount of its 4.000% Senior Notes due 2018, US$450 million aggregate principal amount of its 5.950% Senior Notes due 2025 and US$400 million aggregate principal amount of its 6.950% Senior Notes due 2045 (collectively, the “Notes”) pursuant to the Indenture (the “Original Indenture”) dated as of 16 March 2015 between the Company, as issuer, and Wells Fargo Bank, N.A., as trustee, (the “Trustee”) and the First Supplemental Indenture (the “Supplemental Indenture”) dated as of 16 March 2015 between the Company, as issuer, Noble Corporation, as guarantor (the “Parent Guarantor”), of the Notes (the “Guarantee”); and the Trustee (the Original Indenture and Supplemental Indenture are herein collectively referred to as the “Indenture”).

Under the Supplemental Indenture, the Parent Guarantor will guarantee, in general terms, the principal of, premium, if any, interest on and all other payment obligations of the Company due under the Indenture and the Notes (the “Guarantee”). The Notes will be three series of the Company’s senior debt securities, and the Guarantee will be a guarantee of the Parent Guarantor, all registered on a Registration Statement on Form S-3 (Registration No. 202378), as amended and supplemented (the “Registration Statement”), filed by the Company and the Parent Guarantor with the United States Securities and Exchange Commission (the “Commission”) under the Securities Act of 1933, as amended (the “Securities Act”).

We understand that Baker Botts L.L.P., United States counsel to the Company, will deliver its opinion relating to the Notes to be delivered under the Registration Statement.

We have reviewed originals, copies, drafts or conformed copies of the following documents:

The documents listed in 1.6 to 1.7 above are collectively referred to as the “Directors’ Certificates”.

The following opinion is given only as to, and based on, circumstances and matters of fact existing and known to us on the date of this opinion. This opinion only relates to the laws of the Cayman Islands which are in force on the date of this opinion. In giving this opinion we have relied (without further verification) upon the completeness and accuracy of the Directors’ Certificates and the Certificates of Good Standing. We have also relied upon the following assumptions, which we have not independently verified:

Based upon, and subject to, the foregoing assumptions and the qualifications set out below, and having regard to such legal considerations as we deem relevant, we are of the opinion that:

This opinion is given as of the date shown. We hereby consent to the use of this opinion as an exhibit to the Current Report on Form 8-K of the Parent Guarantor to be filed with the Commission on 12 March 2015 (the “Form 8-K”). In giving such consent, we do not hereby admit that we are in the category of persons whose consent is required under Section 7 of the Securities Act.

We are aware that Baker Botts L.L.P. will rely as to matters of Cayman Islands law on this opinion in rendering its opinions to you to be filed with the Form 8-K and we authorise them to so rely.

Noble Holding International Limited

PO Box 309, Ugland House, KY1-1104

Grand Cayman, Cayman Islands

16 March 2015

To: Maples and Calder

PO Box 309

Ugland House

KY1-1104

Grand Cayman

Cayman Islands

Dear Sirs:

Noble Holding International Limited (the “Company”)

I, Alan R. Hay, being a director of the Company, am aware that you are being asked to provide a legal opinion (the “Opinion”) in relation to certain aspects of Cayman Islands law. Capitalised terms used in this certificate have the meaning given to them in the Opinion. I hereby certify that:

Alan R. Hay

David M.J. Dujacquier

Andrew J. Strong

I confirm that you may continue to rely on this Certificate as being true and correct on the day that you issue the Opinion unless I shall have previously notified you personally to the contrary.

[signature page follows]

IN WITNESS WHEREOF, the undersigned has executed this Director’s Certificate as of the date first written above.

Signature Page - NHIL Director’s Certificate

(Maples and Calder Exhibit 5 Opinion)

Noble Corporation

PO Box 309, Ugland House, KY1-1104

Grand Cayman, Cayman Islands

16 March 2015

To: Maples and Calder

P.O. Box 309

Ugland House

KY1-1104

Grand Cayman

Cayman Islands

Dear Sirs:

Noble Corporation (the “Parent Guarantor”)

I, Alan R. Hay, being a director of the Parent Guarantor, am aware that you are being asked to provide a legal opinion (the “Opinion”) in relation to certain aspects of Cayman Islands law. Capitalised terms used in this certificate have the meaning given to them in the Opinion. I hereby certify that:

David M.J. Dujacquier

David W. Williams

Dennis J. Lubojacky

Andrew J. Strong

Alan R. Hay.

I confirm that you may continue to rely on this Certificate as being true and correct on the day that you issue the Opinion unless I shall have previously notified you personally to the contrary.

[signature page follows]

IN WITNESS WHEREOF, the undersigned has executed this Director’s Certificate as of the date first written above.

Signature Page - Noble Corporation Director’s Certificate

(Maples and Calder Exhibit 5 Opinion)