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GCT Semiconductor Holding, Inc.

2290 North 1st Street, Suite 201

San Jose, California 95131

(408) 434-6040

April 7, 2025

VIA EDGAR

Securities and Exchange Commission

Division of Corporation Finance

100 F. Street, N.E.

Washington, D.C. 20549

Attention: Erin Donahue

Re: GCT Semiconductor Holding, Inc.

Registration Statement on Form S-3

Filed April 1, 2025

File No. 333-286316

Ladies and Gentlemen:

In accordance with Rule 461 under the Securities Act of 1933, as amended, GCT Semiconductor Holding, Inc. (the “Registrant”) respectfully requests that the effective date of the above-referenced Registration Statement on Form S-3 be accelerated so that the same will become effective at 4:30 PM EST on April 9, 2025, or as soon thereafter as is practicable.

The Registrant hereby authorizes Albert Lung and Lixin Ayrik, of Morgan, Lewis & Bockius LLP to orally modify or withdraw this request for acceleration.

Please contact Albert Lung at (650) 843-7263 or albert.lung@morganlewis.com or Lixin Ayrik at (213) 612-2694 or lixin.ayrik@morganlewis.com with any questions you may have concerning this request, and please notify them when this request for acceleration has been granted.

Very truly yours,

GCT Semiconductor Holding, Inc.

By: /s/ John Schlaefer                    

Name: John Schlaefer

Title: Chief Executive Officer