Company: TNRSF
Filing Date: 2025-08-01
Form Type: 6-K
Source: 0001171843-25-004943
Chunk: 0

Company: TENARIS SA
Filing Date: 2025-08-01
Form: 6-K
Chunk 0
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<div align='center'>FORM 6 - K

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Report of Foreign Private Issuer

Pursuant to Rule 13a - 16 or 15d - 16 of

the Securities Exchange Act of 1934</div>

As of 30 July, 2025

<div align='center'>TENARIS, S.A.

(Translation of Registrant's name into English)

26, Boulevard Royal, 4th floor

L-2449 Luxembourg

(Address of principal executive offices)

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

Form 20-F Ö Form 40-F
___</div>

The attached material is being furnished to the Securities and Exchange Commission pursuant
to Rule 13a-16 and Form 6-K under the Securities Exchange Act of 1934, as amended. This report contains Tenaris S.A. Consolidated Condensed
Interim Financial Statements for the six-month period ended June 30, 2025.

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

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.

Date: July 30, 2025

<div align='center'>Tenaris, S.A.</div>

By: /s/ Giovanni Sardagna

Giovanni Sardagna

Investor Relations Officer

CONSOLIDATED CONDENSED INTERIM INCOME STATEMENTS

|                                                                               |     |       |     | 2025       | Three-month period ended 
                 June 30, |   |     | 2024 |            |   |     | 2025       | Six-month period ended 
               June 30, |   |     | 2024 |            |   |
|:------------------------------------------------------------------------------|:----|------:|:----|:-----------|-------------------------:|:--|:----|:-----|-----------:|:--|:----|:-----------|-----------------------:|:--|:----|:-----|-----------:|:--|
|                                                                               |     | Notes |     | -Unaudited |                          |   |     |      |            |   |     | -Unaudited |                        |   |     |