FORM 4
[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).         	UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES
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                      	Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	                      	

1. Name and Address of Reporting Person *

WOO CAROLYN Y	2. Issuer Name and Ticker or Trading Symbol

Aon plc [ AON ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

__X__ Director                    _____ 10% Owner
_____ Officer (give title below)    _____ Other (specify below)	
(Last)         (First)         (Middle)

200 EAST RANDOLPH ST.	3. Date of Earliest Transaction (MM/DD/YYYY)

6/25/2021		
(Street)

CHICAGO, IL 
(City)       (State)       (Zip)	4. If Amendment, Date Original Filed (MM/DD/YYYY)

 	6. Individual or Joint/Group Filing (Check Applicable Line)

_X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person	

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned	
1.Title of Security
(Instr. 3)	2. Trans. Date	2A. Deemed Execution Date, if any	3. Trans. Code
(Instr. 8)	4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)	5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)	
			Code	V	Amount	(A) or (D)	Price				
Class A Ordinary Stock 	6/25/2021 	 	A(1)	  	797 	A	 (1)	27427 	D 	 	

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)	
1. Title of Derivate Security
(Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	4. Trans. Code
(Instr. 8)	5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)	6. Date Exercisable and Expiration Date	7. Title and Amount of Securities Underlying Derivative Security
(Instr. 3 and 4)	8. Price of Derivative Security
(Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)	
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares					

Explanation of Responses:	
(1) 	Class A Ordinary Shares granted annually to each non-employee director of Aon plc. In accordance with Irish law, reporting person agreed to pay the issuer the nominal value of US $0.01 per share issued to the reporting person.	

Reporting Owners	
Reporting Owner Name / Address	Relationships	
	Director	10% Owner	Officer	Other	
WOO CAROLYN Y
200 EAST RANDOLPH ST.
CHICAGO, IL 	X				

Signatures		
/s/ Julie Cho- Julie Cho pursuant to a power of attorney from Carolyn Woo		6/29/2021	
**Signature of Reporting Person		Date

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.	
*	If the form is filed by more than one reporting person, see Instruction 4(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).	
Note:	File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.	
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.	

POWER OF ATTORNEY
I, Carolyn Y. Woo ("Grantor"), hereby confirm, constitute and appoint each of Darren Zeidel, Julie
Cho, and Matthew Cavanaugh, or any of them signing singly, and with full power of substitution, as the
true and lawful attorney-in-fact of Grantor to:
1. prepare, execute in Grantor's name and on Grantor's behalf, and submit to the United States Securities and Exchange Commission (the "SEC") a Form ID, including amendments thereto, 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 promulgated by the SEC;
2. execute for and on behalf of Grantor, in Grantor's capacity as an officer, director or greater than ten percent shareholder of Aon plc (the "Company"), Forms 3, 4 and 5, including but not limited to any amendments thereto, in accordance with Section 16(a) of the Exchange Act, and the rules promulgated thereunder, which may be necessary or desirable as a result of Grantor's ownership of or transaction in securities of the Company; and
3. do and perform any and all acts for and on behalf of Grantor which may be necessary or desirable to complete and execute any such Form 3, 4 or 5 or any amendments thereto, and timely file such form with the SEC and any other stock exchange or similar authority.
Grantor 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, or 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. Grantor
acknowledges that the foregoing attorneys-in-fact, in serving in such capacity at the request of Grantor,
are not assuming, nor is the Company assuming, any of Grantor's responsibilities to comply with Section
16 of the Exchange Act.
This Power of Attorney shall be effective on the date set forth below and shall continue in full force and
effect until the date on which Grantor shall cease to be subject to Section 16 of the Exchange Act and the
rules promulgated thereunder or until such earlier date on which written notification executed by Grantor
is filed with the SEC expressly revoking this Power of Attorney.
IN WITNESS WHEREOF, Grantor has caused this Power of Attorney to be executed as of the date of 02-Dec-2020.

Signature:      /s/ Carolyn Y. Woo
                Carolyn Y. Woo