Exhibit 5.1

Ability Inc.

PO Box 309, Ugland House

Grand Cayman

KY1-1104

Cayman Islands

March 13, 2019

Dear Sirs

Ability Inc.

We have acted as Cayman Islands counsel to Ability Inc. (the “Company”) to provide this legal opinion in connection with the Company’s registration statement on Form S-8, including all amendments or supplements thereto (the “Registration Statement”) filed with the United States Securities and Exchange Commission (the “Commission”) under the United States Securities Act of 1933, as amended (the “Act”) relating to the reservation for issuance of 1,668,887 ordinary shares of a par value of US$0.001 each (the “Shares”) upon the granting of certain awards under the 2015 Long-Term Equity Incentive Plan (the “Plan”).

1 Documents Reviewed

We have reviewed originals, copies, drafts or conformed copies of the following documents, and such other documents as we deem necessary:

1.1	The certificate of incorporation dated 1 September 2015, the certificate of incorporation on change of name dated 23 December 2015 and the amended and restated memorandum and articles of association of the Company as registered or adopted on 23 December 2015 (the “Memorandum and Articles”).
1.2	The minutes (the “Minutes”) of the meeting of the board of directors of the Company held on 25 April 2016 (the “Meeting”) and the corporate records of the Company maintained at its registered office in the Cayman Islands.
1.3	A certificate of good standing with respect to the Company issued by the Registrar of Companies (the “Certificate of Good Standing”).
1.4	A certificate from a director of the Company a copy of which is attached to this opinion letter (the “Director’s Certificate”).

1.5	The Plan.
1.6	The Registration Statement.

2 Assumptions

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

2.1	The Plan has been or will be authorised and duly executed and unconditionally delivered by or on behalf of all relevant parties in accordance with all relevant laws (other than, with respect to the Company, the laws of the Cayman Islands).
2.2	The Plan is, or will be, legal, valid, binding and enforceable against all relevant parties in accordance with its terms under the laws of the State of Delaware (the “Relevant Law”) and all other relevant laws (other than, with respect to the Company, the laws of the Cayman Islands).
2.3	The choice of the Relevant Law as the governing law of the Plan has been made in good faith and would be regarded as a valid and binding selection which will be upheld by the courts of the State of California and any other relevant jurisdiction (other than the Cayman Islands) as a matter of the Relevant Law and all other relevant laws (other than the laws of the Cayman Islands).
2.4	Copies of documents, conformed copies or drafts of documents provided to us are true and complete copies of, or in the final forms of, the originals.
2.5	All signatures, initials and seals are genuine.
2.6	The capacity, power, authority and legal right of all parties under all relevant laws and regulations (other than, with respect to the Company, the laws and regulations of the Cayman Islands) to enter into, execute, unconditionally deliver and perform their respective obligations under the Plan.
2.7	No monies paid to or for the account of any party under the Plan or the Registration Statement or any property received or disposed of by any party to the Plan or the Registration Statement in each case in connection with the Plan or the Registration Statement or the consummation of the transactions contemplated thereby represent or will represent proceeds of criminal conduct or criminal property or terrorist property (as defined in the Proceeds of Crime Law (2019 Revision) and the Terrorism Law (2018 Revision), respectively).
2.8	There is nothing under any law (other than the laws of the Cayman Islands) which would or might affect the opinions set out below. Specifically, we have made no independent investigation of the Relevant Law.
2.9	No invitation has been or will be made by or on behalf of the Company to the public in the Cayman Islands to subscribe for any of the Ordinary Shares.

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2.10 The Company will receive money or money’s worth in consideration (the “Consideration”) for the issue of the Ordinary Shares and none of the Ordinary Shares were or will be issued for less than par value.

Save as aforesaid we have not been instructed to undertake and have not undertaken any further enquiry or due diligence in relation to the transaction the subject of this opinion.

3 Opinions

Based upon, and subject to, the foregoing assumptions and the qualification set out below, and having regard to such legal considerations as we deem relevant, we are of the opinion that the Shares to be offered and issued by the Company pursuant to the provisions of the Plan, have been duly authorised for issue, and when issued by the Company pursuant to the provisions of the Plan for the consideration fixed thereto and duly registered in the Company’s register of members (shareholders), will be validly issued and (assuming that all of the Consideration is received by the Company) will be fully paid and non-assessable.

4 Qualifications

The opinions expressed above are subject to the following qualifications:

4.1 Under the Companies Law (2018 Revision) of the Cayman Islands, the register of members of a Cayman Islands company is by statute regarded as prima facie evidence of any matters which the Companies Law (2018 Revision) of the Cayman Islands directs or authorises to be inserted therein. A third party interest in the shares in question would not appear. An entry in the register of members may yield to a court order for rectification (for example, in the event of fraud or manifest error).

4.2 In this opinion letter, the phrase “non-assessable” means, with respect to the issuance of shares, that a shareholder shall not, in respect of the relevant shares and in the absence of a contractual arrangement, or an obligation pursuant to the memorandum and articles of association, to the contrary, have any obligation to make further contributions to the Company’s assets (except in exceptional circumstances, such as involving fraud, the establishment of an agency relationship or an illegal or improper purpose or other circumstances in which a court may be prepared to pierce or lift the corporate veil).

We hereby consent to the filing of this opinion as an exhibit to the Registration Statement. In providing our consent, we do not thereby admit that we are in the category of persons whose consent is required under Section 7 of the Act or the Rules and Regulations of the Commission thereunder.

This opinion is addressed to you and may be relied upon by you and your counsel. This opinion is limited to the matters detailed herein and is not to be read as an opinion with respect to any other matter.

Yours faithfully

/s/ Maples and Calder

Maples and Calder

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