Exhibit 24


				POWER OF ATTORNEY

	KNOW ALL BY THESE PRESENTS, THAT the undersigned hereby constitutes
and appoints each of Laurie Ferber, Jacqueline Giammarco and James Ho, signing singly,
the undersigned's true and lawful attorney-in-fact to:

(1)	prepare, execute in the undersigned's name and on the undersigned's behalf,
and submit to the United States Securities and Exchange Commission (the
"SEC") a Form ID, Uniform Application for Access Codes to File on
EDGAR, and any other documents necessary or appropriate to obtain codes
and passwords enabling the undersigned to make electronic filings with the
SEC of reports required by Section 16(a) of the Securities Exchange Act of
1934, as amended (the "Exchange Act") or any rule or regulation of the SEC;

(2)	execute for and on behalf of the undersigned, in the undersigned's capacity as
an officer of MF Global Ltd. (the "Company"), Forms 3, 4 and 5 (including
amendments thereto) in accordance with Section 16(a) of the Exchange Act
and the rules and regulations thereunder, and any other forms or reports the
undersigned may be required to file in connection with the undersigned's
ownership, acquisition, or disposition of securities of the Company;

(3)	do and perform any and all acts for and on behalf of the undersigned which
may be necessary or desirable to complete and execute any such Forms 3, 4, 5
or Form ID or other form or report, and timely file such form or report with
the SEC and any stock exchange or similar authority; and

(4)	take any other action of any type whatsoever in connection with the foregoing
which, in the opinion of such attorney-in-fact, may be of benefit to, in the best
interest of, or legally required by, the undersigned, it being understood that
the documents executed by such attorney-in-fact on behalf of the undersigned
pursuant to this Power of Attorney shall be in such form and shall contain
such terms and conditions as such attorney-in-fact may approve in such
attorney-in-fact's discretion.

      The undersigned hereby grants to each such attorney-in-fact full power and
authority to do and perform any and every act and thing whatsoever requisite, necessary
or proper to be done in the exercise of any of the rights and powers herein granted, as
fully to all intents and purposes as the undersigned might or could do if personally
present, with full power of substitution or revocation, hereby ratifying and confirming all
that such attorney-in-fact's substitute or substitutes, shall lawfully do or cause to be done
by virtue of this power of attorney and the rights and powers herein granted.  The
undersigned acknowledges that the foregoing attorneys-in-fact, in serving in such
capacity at the request of the undersigned, are not assuming, nor is the Company
assuming, any of the undersigned's responsibilities to comply with Section 16 of the
Exchange Act.

	The undersigned agrees that each such attorney-in-fact herein may rely entirely on
information furnished orally or in writing by the undersigned to such attorney-in-fact.
The undersigned also agrees to indemnify and hold harmless the Company and each such
attorney-in-fact against any losses, claims, damages or liabilities (or actions in these
respects) that arise out of or are based upon any untrue statements or omission of
necessary facts in the information provided by the undersigned to such attorney-in-fact
for purposes of executing, acknowledging, delivering or filing Forms 3, 4 or 5 (including
amendments thereto) or Form ID and agrees to reimburse the Company and such
attorney-in-fact for any legal or other expenses reasonably incurred in connection with
investigating or defending against any such loss, claim, damage, liability or action.

	This Power of Attorney shall remain in full force and effect until the undersigned
is no longer required to file Forms 3, 4 and 5 with respect to the undersigned's holdings
of and transactions in securities issued by the Company, unless earlier revoked by the
undersigned in a signed writing delivered to the foregoing attorneys-in-fact.

	IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to
be executed as of the 13th day of August, 2009.

							/s/ James Rowsell
							Signature

							James Rowsell
							Print Name