Company: CMRE-PC
Filing Date: 2025-11-25
Form Type: 6-K
Source: 0001171843-25-007564
Chunk: 0

Company: Costamare Inc.
Filing Date: 2025-11-25
Form: 6-K
Chunk 0
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<div align='center'>UNITED STATES
SECURITIES AND EXCHANGE COMMISSIONWashington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR
15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of November 2025

Commission File Number: 001-34934

COSTAMARE INC.

(Translation of registrant’s name into English)

7 rue du Gabian, MC 98000 Monaco (Address of principal executive office)</div>

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 ☐

<div align='center'>INCORPORATION BY REFERENCE</div>

Exhibit 99.1 to this Report on Form 6-K shall be incorporated by reference
into our registration statements on Form F-3, as filed with the U.S. Securities and Exchange Commission on July 6, 2016 (File No. 333-212415)
and March 29, 2024 (File No. 333-278366) to the extent not superseded by information subsequently filed or furnished (to the extent we
expressly state that we incorporate such furnished information by reference) by us under the Securities Act of 1933 or the Securities
Exchange Act of 1934, in each case as amended.

<div align='center'>EXHIBIT INDEX</div>

<div align='center'>SIGNATURES</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: November 25, 2025

| COSTAMARE INC. |                         |
| By:            | /s/ Gregory G. Zikos    |
| Name:          | Gregory G. Zikos        |
| Title:         | Chief Financial Officer |