June 8, 2021

VIA EDGAR

United States Securities and Exchange Commission

Division of Corporation Finance

Office of Manufacturing

100 F Street, NE

Washington, D.C. 20549

Attn:	Thomas Jones
	Jay Ingram
	Heather Clark
	Martin James
Re:	Hennessy Capital Investment Corp. VI
	Registration Statement on Form S-1, as amended
	Filed March 10, 2021
	File No. 333-254062

Dear Ladies and Gentlemen:

Pursuant to Rule 461 of the General Rules and Regulations under the Securities Act of 1933, as amended (the “Act”), the undersigned, for itself and the several underwriters, hereby joins in the request of Hennessy Capital Investment Corp. VI that the effective date of the above-referenced Registration Statement be accelerated so as to permit it to become effective at 4:00 p.m. ET on June 10, 2021, or as soon thereafter as practicable.

Pursuant to Rule 460 of the General Rules and Regulations under the Act, the undersigned advises that as of the date hereof, approximately 500 copies of the Preliminary Prospectus dated May 3, 2021 have been distributed to prospective underwriters and dealers, institutional investors, retail investors and others.

The undersigned advises that it has complied and will continue to comply with the requirements of Rule 15c2-8 under the Securities Exchange Act of 1934, as amended.

* * *

[Signature Page Follows]

Very truly yours,
CITIGROUP GLOBAL MARKETS INC.
as Representative of the Several Underwriters
By:	/s/ Niraj J. Shah
	Name: Niraj J. Shah
	Title: Managing Director
BARCLAYS CAPITAL INC.
as Representative of the Several Underwriters
By:	/s/ Victoria Hale
	Name: Victoria Hale
	Title: Authorized Signatory

[Signature Page to Underwriters Acceleration Request Letter]