EX-5.1

EXHIBIT 5.1

NEW YORK

LONDON

SINGAPORE

PHILADELPHIA

CHICAGO

WASHINGTON, DC

SAN FRANCISCO

SILICON VALLEY

SAN DIEGO

LOS ANGELES

TAIWAN

BOSTON

HOUSTON

AUSTIN

HANOI

HO CHI MINH CITY

LOGO

FI RM and AFFILIATE OFFICES

www.duanemorris.com

SHANGHAI

ATLANTA

BALTIMORE

WILMINGTON

MIAMI

BOCA RATON

PITTSBURGH

NEWARK

LAS VEGAS

CHERRY HILL

LAKE TAHOE

MYANMAR

OMAN

A GCC REPRESENTATIVE OFFICE

OF DUANE MORRIS

ALLIANCES IN MEXICO

AND SRI LANKA

September 30, 2021

Board of Directors

Donegal Group Inc.

1195 River Road

Marietta, Pennsylvania 17547

Re:

Donegal Group Inc. (the “Company”)

Registration Statement on Form S-3

Ladies and Gentlemen:

We have acted as counsel to the Company in connection with the preparation and filing with the Securities and Exchange Commission under the Securities Act of 1933, as amended, of a registration statement on Form S-3 (the “Registration Statement”) relating to the offer and sale by the Company of up to 500,000 shares (the “Shares”) of Class A Common Stock, $.01 par value, of the Company, that the Company may issue under the Company’s 2021 Agency Stock Purchase Plan (the “Plan”).

As counsel to the Company, we have supervised all corporate proceedings in connection with the preparation and filing of the Registration Statement. We have also examined the Company’s Certificate of Incorporation and By-laws, as amended to date, its corporate minutes and other proceedings and the records relating to the authorization, sale and issuance of the Shares and the adoption of the Plan, and such other documents and matters of law as we have deemed necessary or appropriate in order to render this opinion.

Based upon the foregoing, it is our opinion that each of the Shares, when issued and paid for in accordance with the terms and conditions of the Plan, will be duly authorized, legally and validly issued and outstanding, fully paid and nonassessable.