UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934

Filed by the Registrant  ☒

Filed by a Party other than the Registrant  ☐

Check the appropriate box:

☐	Preliminary Proxy Statement
☐	Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))
☐	Definitive Proxy Statement
☒	Definitive Additional Materials
☐	Soliciting Material Pursuant to §240.14a-12

OneSpaWorld Holdings Limited

(Name of registrant as specified in its charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Payment of Filing Fee (Check the appropriate box):

☒	No fee required.
☐	Fee paid previously with preliminary materials.
☐	Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11.

Your Vote Counts! ONESPAWORLD HOLDINGS LIMITED 2023 Annual Meeting Vote by June 6, 2023 11:59 PM ET Graphics Appears Here ONESPAWORLD HOLDINGS LIMITED OFFICE NUMBER 2, PINEAPPLE BUSINESS PARK, AIRPORT INDUSTRIAL PARK, P.O. BOX N-624 NASSAU, ISLAND OF NEW PROVIDENCE, COMMONWEALTH OF THE BAHAMAS V12034-P92477 You invested in ONESPAWORLD HOLDINGS LIMITED and it’s time to vote! You have the right to vote on proposals being presented at the Annual Meeting. This is an important notice regarding the availability of proxy material for the shareholder meeting to be held on June 7, 2023. Get informed before you vote View the Notice of Annual Meeting of Shareholders and Proxy Statement and Annual Report online OR you can receive a free paper or email copy of the material(s) by requesting prior to May 24, 2023. If you would like to request a copy of the material(s) for this and/or future shareholder meetings, you may (1) visit www.ProxyVote.com, (2) call 1-800-579-1639 or (3) send an email to sendmaterial@proxyvote.com. If sending an email, please include your control number (indicated below) in the subject line. Unless requested, you will not otherwise receive a paper or email copy. For complete information and to vote, visit www.ProxyVote.com Control # Smartphone users Point your camera here and vote without entering a control number Vote in Person at the Meeting* June 7, 2023 12:30 p.m., Eastern Daylight Library Room, located at The Island House Mahogany Hill, Western Road Nassau, Bahamas *Please check the meeting materials for any special requirements for meeting attendance. At the meeting, you will need to request a ballot to vote these shares. V1.2 V1.2

Vote at www.ProxyVote.com THIS IS NOT A VOTABLE BALLOT This is an overview of the proposals being presented at the upcoming shareholder meeting. Please follow the instructions on the reverse side to vote these important matters. Board Voting Items Recommends 1. Election of Class A Directors Nominees: 1a. Andrew R. Heyer For 1b. Leonard Fluxman For 2. Ratification of the appointment of Ernst & Young LLP as the independent registered public accounting firm for the For year ending December 31, 2023. NOTE: Such other business as may properly come before the meeting or any adjournment thereof. Prefer to receive an email instead? While voting on www.ProxyVote.com, be sure to click “Delivery Settings”. V12035-P92477