Exhibit 99.3

8th Floor, 100 University Avenue Toronto, Ontario M5J 2Y1 www.computershare.com Security Class Holder Account Number Fold Form of Proxy - Annual Meeting to be held on Tuesday, June 28, 2016 This Form of Proxy is solicited by and on behalf of Management. Notes to proxy 1. Every holder has the right to appoint some other person or company of their choice, who need not be a holder, to attend and act on their behalf at the meeting or any adjournment or postponement thereof. If you wish to appoint a person or company other than the persons whose names are printed herein, please insert the name of your chosen proxyholder in the space provided (see reverse). 2. If the securities are registered in the name of more than one owner (for example, joint ownership, trustees, executors, etc.), then all those registered should sign this proxy. If you are voting on behalf of a corporation or another individual you must sign this proxy with signing capacity stated, and you may be required to provide documentation evidencing your power to sign this proxy. 3. This proxy should be signed in the exact manner as the name(s) appear(s) on the proxy. 4. If this proxy is not dated, it will be deemed to bear the date on which it is mailed by Management to the holder. 5. The securities represented by this proxy will be voted as directed by the holder, however, if such a direction is not made in respect of any matter, this proxy will be voted as recommended by Management. 6. The securities represented by this proxy will be voted in favour or withheld from voting or voted against each of the matters described herein, as applicable, in accordance with the instructions of the holder, on any ballot that may be called for and, if the holder has specified a choice with respect to any matter to be acted on, the securities will be voted accordingly. 7. This proxy confers discretionary authority in respect of amendments or variations to matters identified in the Notice of Meeting or other matters that may properly come before the meeting or any adjournment or postponement thereof. 8. This proxy should be read in conjunction with the accompanying documentation provided by Management. Fold Proxies submitted must be received by 3:00 p.m., Calgary time, on Friday, June 24, 2016 VOTE USING THE TELEPHONE OR INTERNET 24 HOURS A DAY 7 DAYS A WEEK! To Vote Using the Telephone To Vote Using the Internet • Call the number listed BELOW from a touch tone telephone. 1-866-732-VOTE (8683) Toll Free • Go to the following web site: www.investorvote.com Smartphone? Scan the QR code to vote now. • If you vote by telephone or the Internet, DO NOT mail back this proxy. Voting by mail may be the only method for securities held in the name of a corporation or securities being voted on behalf of another individual. Voting by mail or by Internet are the only methods by which a holder may appoint a person as proxyholder other than the Management nominees named on the reverse of this proxy. Instead of mailing this proxy, you may choose one of the two voting methods outlined above to vote this proxy. To vote by telephone or the Internet, you will need to provide your CONTROL NUMBER listed below. CONTROL NUMBER 018O4A

Appointment of Proxyholder I/We being holder(s) of (“Shareholders”) of common shares (“Common Shares”) of Pengrowth Energy Corporation (the “Corporation”) hereby appoint(s): Derek W. Evans, the President and Chief Executive Officer of the Corporation, of Calgary, Alberta, or failing him, John B. Zaozirny, Chairman of the Board of Directors of the Corporation, of Calgary, Alberta Print the name of the person you are appointing if this person is someone other than the Management Nominees listed herein. OR as my/our proxyholder with full power of substitution and to attend, act and to vote for and on behalf of the shareholder in accordance with the following direction (or if no directions have been given, as the proxyholder sees fit) and all other matters that may properly come before the Annual Meeting (the “Meeting”), of shareholders of Pengrowth Energy Corporation to be held at Metropolitan Conference Centre, 333 Fourth Avenue S.W., Calgary, Alberta on Tuesday, June 28, 2016 at 3:00 p.m. (Calgary time) and at any adjournment or postponement thereof. VOTING RECOMMENDATIONS ARE INDICATED BY HIGHLIGHTED TEXT OVER THE BOXES. 1. Appointment of Auditors Appointment of KPMG LLP as auditors of the Corporation for the ensuing year and authorizing the Directors to fix their remuneration. 2. Election of Directors For Withhold Fold VOTE FOR all nominees listed below (or vote for individual nominees below) Withhold Withhold Withhold 01. Derek W. Evans 02. Margaret L. Byl 03. Wayne K. Foo 04. Kelvin B. Johnston 05. James D. McFarland 06. A. Terence Poole 07. Jamie C. Sokalsky 08. D. Michael G. Stewart 3. Unallocated Share Awards To consider and, if deemed advisable, approve an ordinary resolution authorizing and approving unallocated awards issuable pursuant to the long term incentive plan of the Corporation, the full text of which resolution is set forth in the information circular of the Corporation dated April 29, 2016. 4. Executive Compensation - To vote in an advisory, non-binding capacity on a resolution to accept the Corporation’s approach to executive compensation, the full text of which resolution is set forth in the information circular of the Corporation dated April 29, 2016. Fold 5. At the discretion of the proxyholder, to vote upon any amendment or variation of the above matters or any other matters which may properly come before the Meeting or any adjournment thereof. Signature(s) Date Authorized Signature(s) – This section must be completed for your instructions to be executed. I/We authorize you to act in accordance with my/our instructions set out above. I/We hereby revoke any proxy previously given with respect to the Meeting. If no voting instructions are indicated above, this Proxy will be voted as recommended by Management. MM / DD / YY Interim Financial Statements – Mark this box if you would like to receive Interim Financial Statements and accompanying Management’s Discussion and Analysis by mail. Annual Financial Statements – Mark this box if you would NOT like to receive the Annual Financial Statements and accompanying Management’s Discussion and Analysis by mail. If you are not mailing back your proxy, you may register online to receive the above financial report(s) by mail at www.computershare.com/mailinglist. P E Q Q 018O5B 197088 A R 2 For Against For Against For For For For Withhold