附錄 99.1

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你的投票很重要。請今天投票。通過互聯網投票-快速輕鬆即時投票-每週 7 天、每天 24 小時或通過郵寄方式投票 2024 VINFAST AUTO LTD.(在新加坡共和國註冊成立)(公司註冊號 201501874G)您的互聯網投票授權指定代理人以與您標記、簽署和歸還代理卡相同的方式對您的股票進行投票。通過互聯網以電子方式提交的選票必須在東部時間2024年6月24日上午8點59分之前收到。互聯網——www.cstproxyvote.com 使用互聯網為你的代理投票。訪問上述網站時,請準備好您的代理卡。按照提示對您的股票進行投票。在會議上投票-如果您計劃參加虛擬的在線年度股東大會,則需要您的 12 位控制號碼才能在年度股東大會上進行電子投票。要參加:https://www.cstproxy.com/vinfastauto/2024 MAIL-在代理卡上標記、簽名並註明日期,然後將其放入提供的已付郵資信封中退回。如果董事會建議對提案1、2、3、4、5、6、7、8、9、10、11和12投贊成票,請在此處摺疊代理卡,不要分開或插入信封中。請將你的選票標記為這次董事選舉 (1) Pham Nhat Vuong (2) Le Thi Thuy (3) Ling Chung Yee Roy (4) Tham Chee Soon (5) Nguyen Thi Van Trinh (6) Nguyen Thi Lan Anh 反對棄權票 10。任命安永會計師事務所和安永越南有限公司為截至2024年12月31日的財政年度的公司審計師,並授權董事固定薪酬。11.接收並通過截至2023年12月31日的財政年度的董事報表和經審計的財務報表(根據新加坡財務報告準則(國際)進行審計和報告,以及相關的審計報告(“2023年SFRS財務報告”)。因為反對棄權反對反對棄權 7.批准和批准截至2023年12月31日的財政年度總額為20萬美元的董事費。8.批准支付截至2024年12月31日的財政年度的總額不超過50萬美元的董事費。9.批准支付 “反對棄權” 或 “棄權” 或 “反對棄權” 的董事費 12.批准委託書中規定的股票發行。在截至2025年12月31日的財政年度,反對棄權的總金額不超過50萬美元。控制編號簽名簽名,如果共同持有日期,2024 年注意:請完全按照此處顯示的姓名簽名。當股份由共同所有者持有時,雙方都應簽字。簽約成為律師、遺囑執行人、管理人、受託人、監護人或公司高管時,請註明相應的頭銜。 X

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188580 Vinfast Auto Ltd. Proxy Card Rev3 Back 2024 Important Notice Regarding the Internet Availability of Proxy Materials for the Annual General Meeting To view the 2024 Proxy Statement, 2024 Annual Report and to Attend the Annual General Meeting, please go to: https://www.cstproxy.com/vinfastauto/2024 PROXY CARD FOLD HERE • DO NOT SEPARATE • INSERT IN ENVELOPE PROVIDED THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS VINFAST AUTO LTD. Incorporated in the Republic of Singapore) (Company Registration No: 201501874G) I/We*, (Name), NRIC/Passport Number/Company Registration Number* of (Address) being a member/members* of VINFAST AUTO LTD. (the “Company”), hereby appoint: Name NRIC/Passport No. Proportion of Shareholdings No. of Shares % Address and/or Name NRIC/Passport No. Proportion of Shareholdings No. of Shares % Address or failing the person, or either or both of the persons, referred to above, the Chairman of the Meeting as my/our proxy/proxies to attend and vote for me/us on my/our behalf at the annual general meeting (“AGM” or “Meeting”) of the Company to be held at https://www.cstproxy.com/vinfastauto/2024 on June 27, 2024 at 9:00 PM (Singaporean time) and at any adjournment thereof. I/We direct my/our proxy/proxies* to vote for or against the Resolutions proposed at the Meeting as voted as indicated in the proxy card, which accompanied the notice of the 2024 AGM. If no specific direction as to voting is given, the proxy/proxies will vote or abstain from voting at his/her/their discretion, as he/she/they* will on any other matter arising at the Meeting and at any adjournment thereof. Dated this day of 2024 Signature of Member(s) or Common Seal of corporate Member Please, see notes on this proxy form at https://www.cstproxy.com/vinfastauto/2024 (Continued and to be marked, dated and signed, on the other side) Total number of Shares in Register of Members No. of Shares