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) June 14, 2006

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Citigroup Inc.

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(Exact name of registrant as specified in its charter)

                                  Delaware                              1-9924                              52-1568099

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                               (State or other                       (Commission                       (IRS Employer

                               jurisdiction of                         File Number)                    Identification No.)

                               incorporation)

399 Park Avenue, New York, New York 10043

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(Address of principal executive offices) (Zip Code)

(212) 559-1000

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(Registrant's telephone number, including area code)

          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:

 [ ] Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

 [ ] Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

 [ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

 [ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Citigroup Inc.

Current Report on Form 8-K

Item 8.01 Other Events.

Notices filed pursuant to Rule 135c under the Securities Act of 1933 relating to issuances by Citigroup Inc. in 2005 made pursuant to Regulation S under the Securities Act of 1933.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits.

Exhibit Number

  99 (1)Rule 135c Notice relating to Citigroup’s EUR 1,250,000,000 4.25% fixed

   rate/floating rate subordinated notes due February 2030.

  99 (2)Rule 135c Notice relating to Citigroup’s SGD 100,000,000 3.50% fixed rate

                                      subordinated notes due April 2020.

                    99 (3)         Rule 135c Notice relating to Citigroup’s EUR 800,000,000 floating rate notes

                                      due June 2012.

                    99 (4)         Rule 135c Notice relating to Citigroup’s CHF 250,000,000 floating rate notes

                                      due May 2008.

                    99 (5)         Rule 135c Notice relating to Citigroup’s EUR 1,250,000,000 3.50% fixed rate

                                       notes due August 2015.

                    99 (6)         Rule 135c Notice relating to Citigroup’s GBP 500,000,000 floating rate notes

                                      due November 2010.

                    99 (7)         Rule 135c Notice relating to Citigroup’s EUR 800,000,000 3.625% fixed

                                       rate/floating rate subordinated notes due November 2017.

                    99 (8)         Rule 135c Notice relating to Citigroup’s CHF 350,000,000 1.75% fixed rate notes

                                      due September 2010.

                    99 (9)         Rule 135c Notice relating to Citigroup’s CHF 250,000,000 2.375% fixed rate

                                       notes due September 2015.

                    99 (10)       Rule 135c Notice relating to Citigroup’s AUD 450,000,000 floating rate notes

                                      due June 2010.

                    99 (11)       Rule 135c Notice relating to Citigroup’s AUD 800,000,000 5.75% fixed rate

                                       notes due June 2010.

                                                                                    SIGNATURE

   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.

Dated: June14, 2006                                                                               CITIGROUP INC.

                                        By: /s/ Michael J. Tarpley  

                                        Name: Michael J. Tarpley

                                        Title: Assistant Secretary

EXHIBIT INDEX

Exhibit Number

99 (1) Rule 135c Notice relating to Citigroup’s EUR 1,250,000,000 4.25% fixed

rate/floating rate subordinated notes due February 2030.

99 (2) Rule 135c Notice relating to Citigroup’s SGD 100,000,000 3.50% fixed

                         rate subordinated notes due April 2020.

99 (3) Rule 135c Notice relating to Citigroup’s EUR 800,000,000 floating rate

  notes due June 2012.

99 (4) Rule 135c Notice relating to Citigroup’s CHF 250,000,000 floating rate

notes due May 2008.

99 (5) Rule 135c Notice relating to Citigroup’s EUR 1,250,000,000 3.50% fixed

rate notes due August 2015.

99 (6) Rule 135c Notice relating to Citigroup’s GBP 500,000,000 floating rate

notes due November 2010.

99 (7) Rule 135c Notice relating to Citigroup’s EUR 800,000,000 3.625% fixed

rate/floating rate subordinated notes due November 2017.

99 (8) Rule 135c Notice relating to Citigroup’s CHF 350,000,000 1.75% fixed

  rate notes due September 2010.

99 (9) Rule 135c Notice relating to Citigroup’s CHF 250,000,000 2.375% fixed

  rate notes due September 2015.

99 (10) Rule 135c Notice relating to Citigroup’s AUD 450,000,000 floating rate

  notes due June 2010.

99 (11) Rule 135c Notice relating to Citigroup’s AUD 800,000,000 5.75% fixed

  rate notes due June 2010.