Company: CGCT
Filing Date: 2025-05-01
Form Type: 8-A12B
Source: 0001104659-25-043271
Chunk: 1

Company: Cartesian Growth Corp III
Filing Date: 2025-05-01
Form: 8-A12B
Chunk 1
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securities to be registered hereby are the units, Class A ordinary shares, par value $0.0001 per share, and redeemable warrants
to purchase Class A ordinary shares of Cartesian Growth Corporation III (the “Company”). The description of the
units (each consisting of one Class A ordinary share and one-half of one redeemable warrant), Class A ordinary shares and
redeemable warrants (each whole warrant exercisable for one Class A ordinary share at an exercise price of $11.50) contained in the
section entitled “Description of Securities” in the prospectus included in the Company’s Registration Statement on
Form S-1 (File No. 333-284565), including exhibits, initially filed with the Securities and Exchange Commission on January 29, 2025, as
amended from time to time (the “Registration Statement”), to which this Form 8-A relates, is incorporated herein by
reference. Any form of prospectus or prospectus supplement to the Registration Statement that includes such descriptions and that is
subsequently filed is also incorporated by reference herein.

| Item 2. | Exhibits. |

Pursuant to theInstructions as to Exhibits for Form 8-A, no exhibits are required to be filed, because no other securities of the Company are registered on The Nasdaq Stock Market LLC, and the securities registered hereby are not being registered pursuant to Section 12(g) of the Securities Exchange Act of 1934, as amended.

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<div align='center'>SIGNATURE</div>

Pursuant to the requirements
of Section 12 of the Securities Exchange Act of 1934, the registrant has duly caused this registration statement to be signed on
its behalf by the undersigned, thereto duly authorized.

| Cartesian growth corporation III |                                   |
| By:                              | /s/ Peter Yu                      |
|                                  | Name:  Peter Yu                   |
|                                  | Title:    Chief Executive Officer |

Dated: May 1, 2025

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