Ownership Submission
FORM 3
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number: 3235-0104
Expires: January 31, 2005
Estimated average burden hours per response... 0.5

(Print or Type Responses)
1. Name and Address of Reporting Person *
  Blackstone Holdings I L.P.
2. Date of Event Requiring Statement (Month/Day/Year)
01/22/2018
3. Issuer Name and Ticker or Trading Symbol
One Madison Corp [OMAD]
(Last)
(First)
(Middle)
C/O THE BLACKSTONE GROUP L.P., 345 PARK AVENUE, 28TH FLOOR
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

NEW YORK, NY 10154
6. Individual or Joint/Group Filing(Check Applicable Line)
___ Form filed by One Reporting Person
_X_ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Beneficially Owned
1.Title of Security
(Instr. 4)
2. Amount of Securities Beneficially Owned
(Instr. 4)
3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)
4. Nature of Indirect Beneficial Ownership
(Instr. 5)
Class A Ordinary Shares 3,440,000
I
See Footnotes (1) (3) (4) (5)
Class A Ordinary Shares 560,000
I
See Footnotes (2) (3) (4) (5)
Class B Ordinary Shares 451,500 (6)
I
See Footnotes (1) (3) (4) (5)
Class B Ordinary Shares 73,500 (6)
I
See Footnotes (2) (3) (4) (5)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)
2. Date Exercisable and Expiration Date
(Month/Day/Year)
3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)
4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)
6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Blackstone Holdings I L.P.
C/O THE BLACKSTONE GROUP L.P.
345 PARK AVENUE, 28TH FLOOR
NEW YORK, NY 10154
    X    
BSOF Master Fund L.P.
C/O THE BLACKSTONE GROUP L.P.
345 PARK AVENUE, 28TH FLOOR
NEW YORK, NY 10154
    X    
BSOF Master Fund II L.P.
C/O THE BLACKSTONE GROUP L.P.
345 PARK AVENUE, 28TH FLOOR
NEW YORK, NY 10154
    X    
Blackstone Strategic Opportunity Associates L.L.C.
C/O THE BLACKSTONE GROUP L.P.
345 PARK AVENUE, 28TH FLOOR
NEW YORK, NY 10154
    X    
Blackstone Alternative Solutions L.L.C.
C/O THE BLACKSTONE GROUP L.P.
345 PARK AVENUE, 28TH FLOOR
NEW YORK, NY 10154
    X    
Blackstone Holdings II L.P.
C/O THE BLACKSTONE GROUP L.P.
345 PARK AVENUE, 28TH FLOOR
NEW YORK, NY 10154
    X    
Blackstone Holdings I/II GP Inc
C/O THE BLACKSTONE GROUP L.P.
345 PARK AVENUE, 28TH FLOOR
NEW YORK, NY 10154
    X    
Blackstone Group L.P.
345 PARK AVENUE, 28TH FLOOR.
NEW YORK, NY 10154
    X    
Blackstone Group Management L.L.C.
C/O THE BLACKSTONE GROUP L.P.
345 PARK AVENUE, 28TH FLOOR
NEW YORK, NY 10154
    X    
SCHWARZMAN STEPHEN A
C/O THE BLACKSTONE GROUP L.P.
345 PARK AVENUE, 28TH FLOOR
NEW YORK, NY 10154
    X    

Signatures

BLACKSTONE HOLDINGS I L.P., By: Blackstone Holdings I/II GP, Inc., its general partner, Name: /s/ J. Tomilson Hill, Title: Vice Chairman 01/31/2018
**Signature of Reporting Person Date

BSOF MASTER FUND L.P., By: Blackstone Strategic Opportunity Associates L.L.C., its general partner, Name: /s/ Peter Koffler, Title: Authorized Person 01/31/2018
**Signature of Reporting Person Date

BSOF MASTER FUND II L.P., By: Blackstone Strategic Opportunity Associates L.L.C., its general partner, Name: /s/ Peter Koffler, Title: Authorized Person 01/31/2018
**Signature of Reporting Person Date

BLACKSTONE STRATEGIC OPPORTUNITY ASSOCIATES L.L.C., Name: /s/ Peter Koffler, Title: Authorized Person 01/31/2018
**Signature of Reporting Person Date

BLACKSTONE ALTERNATIVE SOLUTIONS L.L.C, Name: /s/ Peter Koffler, Title: Authorized Persons 01/31/2018
**Signature of Reporting Person Date

BLACKSTONE HOLDINGS II L.P., By: Blackstone holdings I/II GP Inc., its general partner, Name: /s/ J. Tomilson Hill, Title: Vice Chairman 01/31/2018
**Signature of Reporting Person Date

BLACKSTONE HOLDINGS I/II GP INC., Name: /s/ J. Tomilson Hill, Title: Vice Chairman 01/31/2018
**Signature of Reporting Person Date

THE BLACKSTONE GROUP L.P., By: Blackstone Group Management L.L.C., its general partner, Name: /s/ J. Tomilson Hill, Title: Vice Chairman 01/31/2018
**Signature of Reporting Person Date

BLACKSTONE GROUP MANAGEMENT, L.L.C., Name: /s/ J. Tomilson Hill, Title: Vice Chairman 01/31/2018
**Signature of Reporting Person Date

STEPHEN A. SCHWARZMAN, Name: /s/ Stephen A. Schwarzman 01/31/2018
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) Reflects securities of One Madison Corporation (the "Issuer") directly held by BSOF Master Fund L.P. ("BSOF").
(2) Reflects securities of the Issuer directly held by BSOF Master Fund II L.P. ("BSOF II", and together with BSOF, the "BSOF Funds").
(3) Blackstone Strategic Opportunity Associates L.L.C. ("BSOA") is the general partner of each of the BSOF Funds. Blackstone Holdings II L.P. ("Holdings II") is the sole member of BSOA. Blackstone Alternative Solutions L.L.C. ("BAS") is the investment manager of each of the BSOF Funds. Blackstone Holdings I L.P. ("Holdings I") is the sole member of BAS. Blackstone Holdings I/II GP Inc. ("Holdings GP") is the general partner of each of Holdings I and Holdings II. The Blackstone Group L.P. ("Blackstone") is the controlling shareholder of Holdings GP. Blackstone Group Management L.L.C. ("Blackstone Management") is the general partner of Blackstone. Blackstone Management is wholly owned by its senior managing directors and controlled by its founder, Stephen A. Schwarzman.
(4) Information with respect to each of the Reporting Persons is given solely by such Reporting Person, and no Reporting Person has responsibility for the accuracy or completeness of information supplied by another Reporting Person.
(5) Each of the Reporting Persons (other than to the extent it directly holds securities reported herein) disclaims beneficial ownership of the securities held by the other Reporting Persons, except to the extent of such Reporting Person's pecuniary interest therein, and, pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, each of the Reporting Persons (other than to the extent it directly holds securities reported herein) states that the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of all of the reported securities for purposes of Section 16 or for any other purpose.
(6) The Class B Ordinary Shares ("Founder Shares") will be automatically converted into Class A Ordinary Shares (or Class C Ordinary Shares, at the election of the holder) on the first business day following the consummation of the Issuer's initial business combination. The Founder Shares are subject to certain transfer restrictions and an aggregate of 157,500 of the Founder Shares held by BSOF and BSOF II are subject to forfeiture if certain earnout targets are not met.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, See Instruction 6 for procedure.

Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.