UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 OR 15(d) of The

Securities Exchange Act of 1934

Date of Report (Date of earliest event reported) April 24, 2012

PRAXAIR, INC.

(Exact name of registrant as specified in its charter)

DELAWARE

(State or Other jurisdiction of incorporation)

(203) 837-2000

(Registrant’s telephone number, including area code)

N/A

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

ITEM 5.03 Amendment to Articles of Incorporation or Bylaws; Change in Fiscal Year

The Annual Meeting of Shareholders of Praxair, Inc. was held on April 24, 2012 (the “Annual Meeting”). At the Annual Meeting, shareholders voted upon the items set forth below under Item 5.07, and approved amendments to Praxair’s Restated Certificate of Incorporation, which became effective on April 27, 2012, when they were filed with the Secretary of State of the State of Delaware. In particular, Articles V and VI of Praxair’s Restated Certificate of Incorporation were amended to, among other things, permit holders of 25% or more of Praxair’s outstanding common stock to have special meetings of shareholders called, subject to certain bylaw provisions. In addition, amendments to Praxair’s Amended and Restated Bylaws (“Bylaws”) previously approved by the Board of Directors, became effective concurrently with the effectiveness of the amendments to the Restated Certificate of Incorporation. In particular, Article I of the Bylaws was amended to, among other things, provide certain procedural and other requirements related to the ability of shareholders to have special meetings of shareholders called. The foregoing descriptions of the amendments to Praxair’s Restated Certificate of Incorporation and Bylaws are qualified in their entirety by reference to the full texts of Praxair’s Amended and Restated Certificate of Incorporation and Amended and Restated Bylaws that are filed as Exhibit 3.1 and 3.2, respectively, to this Form 8-K and incorporated herein by reference. In addition, a more complete description of the amendments to the Restated Certificate of Incorporation and Bylaws is set forth in Praxair’s Definitive Proxy Statement dated March 14, 2012 filed with the SEC.

ITEM 5.07 Submission of Matters to a Vote of Security Holders

The total number of shares that were present or represented by proxy at the Annual Meeting was 262,614,112 which was 88% of the shares outstanding and entitled to vote and which constituted a quorum. The final voting results of the items submitted to a vote of the shareholders are set forth below.

Proposal 1

The eleven nominees for election as a director were elected to serve until the 2013 annual meeting of shareholders, and until his or her successor is elected and qualified. The vote results were as follows, with each nominee having received at least 90.5% of the votes cast for his or her election:

Proposal 2

Shareholders approved amendments to Praxair’s Restated Certificate of Incorporation to permit holders of 25% or more of its outstanding common stock to have special meetings of shareholders called, by the votes set forth below.

Proposal 3

Shareholders approved, on an advisory and non-binding basis, the compensation of Praxair’s Named Executive Officers as disclosed in the 2012 Proxy Statement, by the votes set forth below.

Proposal 4

Shareholders rejected a shareholder proposal regarding electioneering policies and contributions, by the votes set forth below.

Proposal 5

Shareholders ratified the appointment of PricewaterhouseCoopers LLP as the independent auditor, by the votes set forth below.

ITEM 9.01. Financial Statements and Exhibits.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Exhibits Index