UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16 OF THE

SECURITIES EXCHANGE ACT OF 1934

For the month of, April 2026

Commission File Number 001-40848

GUARDFORCE AI CO., LIMITED

(Translation of registrant’s name into English)

10 Anson Road, #28-01 International Plaza

Singapore 079903

(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F:

Form 20-F ☒ Form 40-F ☐

Issuance of Press Release

On April 21, 2026, Guardforce AI Co., Limited (the “Company”) issued a press release announcing its financial results and providing a business update for the fiscal year ended December 31, 2025. A copy of that press release is attached as Exhibit 99.1 hereto.

On the same day, the Company posted an updated investor presentation, on its website at https://ir.guardforceai.com/news-events/company-presentation/ in the “News & Events – Company Presentation” section. A copy of that investor presentation is attached as Exhibit 99.2 hereto.

The information furnished in this Report on Form 6-K, including Exhibit 99.1 and Exhibit 99.2 attached hereto, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934 (the “Exchange Act”) or otherwise subject to the liabilities of such section, nor shall such information be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be set forth expressly by specific reference in such filing.

This report on Form 6-K is incorporated by reference into (i) the prospectus contained in the Company’s registration statement on Form F-3 (SEC File No. 333-261881) declared effective by the Securities and Exchange Commission (the “Commission”) on January 5, 2022; (ii) the prospectus dated February 9, 2022 contained in the Company’s registration statement on Form F-3 (SEC File No. 333-262441) declared effective by the Commission on February 9, 2022; (iii) the prospectus contained in the Company’s Post-Effective Amendment No. 1 to Form F-1 on Form F-3 (SEC File No. 333-258054) declared effective by the Commission on June 14, 2022; and (iv) the prospectus contained in the Company’s registration statement on Form F-3 (SEC File No. 333-284261) declared effective by the Securities and Exchange Commission (the “Commission”) on January 24, 2025.

EXHIBIT INDEX

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.