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 UNDER
THE SECURITIES EXCHANGE ACT OF 1934
Report on Form 6-K dated May 31, 2021
Commission File Number: 001-15092
TURKCELL ILETISIM HIZMETLERI A.S.
(Translation of registrant’s name in English)
Aydınevler Mahallesi İnönü Caddesi No:20
Küçükyalı Ofispark
34854 Maltepe
Istanbul, Turkey
(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 x Form 40-F ¨
Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1):
Yes ¨ No x
Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7):
Yes ¨ No x
Indicate by check mark whether the registrant by furnishing the information contained in this form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.
Yes ¨ No x
If “Yes” is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): 82- __________
Enclosure: A press release dated May 31, 2021, regarding JCR-ER Credit Rating.

Istanbul, May 31, 2021
Announcement Regarding JCR-ER Credit Rating
Credit Rating Agency JCR Eurasia Rating has determined our Company’s national long-term rating as “AAA (Trk)”, which is the highest rating level, and long-term foreign currency rating as “BBB-”. The outlooks for national and foreign currency ratings are “Stable” and “Negative”, respectively. Both ratings are investment grade level.
For more information:
Turkcell Investor Relations
investor.relations@turkcell.com.tr
Tel: + 90 212 313 1888
SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, Turkcell Iletisim Hizmetleri A.S. has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
| TURKCELL ILETISIM HIZMETLERI A.S.
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Date: May 31, 2021 | By: | /s/ Ali Serdar Yağcı | | |
| Name: Ali Serdar Yağcı Title: Investor Relations and Corporate Finance Director | |
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| TURKCELL ILETISIM HIZMETLERI A.S.
| |
Date: May 31, 2021 | By: | /s/ Osman Yılmaz | | |
| Name: Osman Yılmaz Title: Chief Financial Officer | |
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