FIRSTSUN CAPITAL BANCORP

1400 16TH Street

Suite 250

Denver, CO 80202

October 27, 2023

VIA EDGAR

U.S. Securities and Exchange Commission

Division of Corporation Finance

100 F Street, N.E.

Washington, D.C. 20549

Attn: Robert Arzonetti

Re: FirstSun Capital Bancorp

Acceleration Request for Registration Statement on Form S-3

File No. 333-275055

Requested Date:                November 1, 2023

Requested Time:                9:00 a.m. Washington, D.C. Time

Ladies and Gentlemen:

In accordance with Rule 461 under the Securities Act of 1933, as amended, we hereby request acceleration of the effective date of the Registration Statement on Form S-3 (File No. 333-275055) (the “Registration Statement”), of FirstSun Capital Bancorp. We respectfully request that the Registration Statement be declared effective as of 9:00 a.m., Washington, D.C. time, on Wednesday, November 1, 2023, or as soon thereafter as practicable.

Once the Registration Statement has been declared effective, please confirm that event with our counsel, J. Brennan Ryan of Nelson Mullins Riley & Scarborough LLP, by email at brennan.ryan@nelsonmullins.com or by telephone at (404) 322-6444.

Very truly yours,

/s/ Robert A. Cafera, Jr.

Robert A. Cafera, Jr.

Executive Vice President and

Chief Financial Officer