Definitive Additional Materials

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

(Rule 14A – 101)

Proxy Statement Pursuant to Section 14(a)

of the Securities Exchange Act of 1934

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   Preliminary Proxy Statement   ¨   

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   Definitive Proxy Statement     

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   Definitive Additional Materials     

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   Soliciting Material Pursuant to §240.14a-12     

ONEOK, Inc.

(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

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LOGO

May 3, 2012

Dear Fellow Shareholder:

We have previously mailed you proxy materials for the ONEOK, Inc. Annual Meeting of Shareholders to be held on May 23, 2012.

According to our latest records we have not yet received your vote. The Annual Meeting is now only a short time away and your vote is important. Please sign and return your Voting Instruction Form today in order to make sure that your shares will be voted at the meeting in accordance with your desires. If you hold your shares in the name of a brokerage firm, your broker cannot vote your shares on several of the proposals unless they receive your specific instructions.

Your board of directors recommends that you vote FOR all nominees for director in proposal 1, and FOR proposals 2, 3, 4, 5 and 6.

In the event that your proxy materials have been misplaced, we are enclosing for your use a duplicate Voting Instruction Form and return envelope.

Please sign and date the enclosed Voting Instruction Form (or follow the telephone and internet instructions on your voting form) today. In the event that two voting forms are received from you, the one bearing the latest date will be counted, as it automatically revokes all prior votes.

Thank you for voting and for your continued support.

Sincerely,

/s/ John W. Gibson

John W. Gibson

Chairman and Chief Executive Officer

 

       

ONEOK, Inc.

100 West Fifth Street

Tulsa, OK 74103

www.oneok.com


 

LOGO

May 3, 2012

Dear Fellow Shareholder:

We have previously mailed you proxy materials for the ONEOK, Inc. Annual Meeting of Shareholders to be held on May 23, 2012.

According to our latest records we have not yet received your vote. The Annual Meeting is now only a short time away and your vote is important. Please sign and return your Proxy Card today in order to make sure that your shares will be voted at the meeting in accordance with your desires.

Your board of directors recommends that you vote FOR all nominees for director in proposal 1, and FOR proposals 2, 3, 4, 5 and 6.

In the event that your proxy materials have been misplaced, we are enclosing for your use a duplicate Proxy Card and return envelope.

Please sign and date the enclosed Proxy Card (or follow the telephone and internet instructions on your proxy card) today. In the event that two proxies are received from you, the one bearing the latest date will be counted, as it automatically revokes all prior votes.

Thank you for voting and for your continued support.

 

Sincerely,
/s/ John W. Gibson
John W. Gibson
Chairman and Chief Executive Officer

 

   ONEOK, Inc.

100 West Fifth Street

Tulsa, OK 74103

www.oneok.com