October 15, 2018

Daniel Hennessy
Chairman and Chief Executive Officer
Hennessy Capital Acquisition Corp IV
3485 N. Pines Way, Suite 110
Wilson, Wyoming 83014

       Re: Hennessy Capital Acquisition Corp IV
           Draft Registration Statement on Form S-1
           Submitted September 18, 2018
           CIK No. 0001750153

Dear Mr. Hennessy:

       We have reviewed your draft registration statement and have the
following comments. In
some of our comments, we may ask you to provide us with information so we may
better
understand your disclosure.

       Please respond to this letter by providing the requested information and
either submitting
an amended draft registration statement or publicly filing your registration
statement on
EDGAR. If you do not believe our comments apply to your facts and circumstances
or do not
believe an amendment is appropriate, please tell us why in your response.

      After reviewing the information you provide in response to these comments
and your
amended draft registration statement or filed registration statement, we may
have additional
comments.

Draft Registration Statement on Form S-1

Coverpage

1.     With reference to your disclosures on page 2, please revise the first
paragraph to identify
       the business sector and size of the business opportunity you intend to
target.
2.     In light of your disclosure on page 51 concerning the non-binding nature
of the Nomura
       forward purchase agreement, it is not clear how this agreement is one of
the most
       significant aspects of the offering and why it should be highlighted on
the cover page. To
       the extent that you include disclosure on the cover page to highlight
conflicts of interest
       with your lead underwriter, then revise to focus your cover page
disclosure on the
 Daniel Hennessy
FirstNameCapital Acquisition Corp IV
Hennessy LastNameDaniel Hennessy
Comapany NameHennessy Capital Acquisition Corp IV
October 15, 2018
October 15, 2018 Page 2
Page 2
FirstName LastName
         conflicts, including, as applicable:
           the applicable ownership threshold that FINRA uses for determining
when an
            underwriter has a conflict of interest;
           the ownership percentage that Nomura potentially may hold as a
result of the forward
            purchase agreement;
           whether Nomura may exercise its purchase rights and receive some or
all of the 12.5
            million Class A shares at a discount to the then-prevailing market
price; and
           the marketing advisory fee which, as disclosed on page 143,
represents 3% of IPO
            gross proceeds.
3.       With reference to your disclosures on pages 12 and 63, please revise
the disclosure in the
         fifth paragraph to highlight briefly the anti-dilution protection
afforded to the Class B
         holders and the plans to ensure that initial stockholders maintain 20%
of the issued and
         outstanding securities.
Business Opportunity Overview, page 2

4.       We refer to the second paragraph under the heading. Please revise to
provide support for
         the claims contained in each sentence of the paragraph. Alternatively,
please delete the
         statements here, and in the Business section, as applicable.
Competitive Strengths, page 2

5.       We note your statements that your CEO and your sponsor participated in
prior SPACs.
         Please disclose in an appropriate section of your prospectus the
benefits received by your
         control persons from all prior association with entities created to
engage in a business
         combination.
6.       Please revise your Summary disclosure to provide equal prominence to
negative operating
         results or stock price performance, if any, experienced at either of
the
         companies acquired by the Hennessy I or II SPACs. For example, we note
that Daseke's
         share price has decreased since the February 2017 acquisition and that
the current share
         price may be below the price paid by IPO investors.
Nomura Equity Backstop Facility, page 3

7.       Please tell us your basis for referring to the Nomura agreement as a
"backstop facility" in
         your prospectus disclosure given your disclosure on page 51 that
Nomura is under no
         obligation to commit funding. Substantially revise the second and
third sentences to
         reflect the conditional nature of any potential Nomura investment and
the fifth sentence to
         clarify how the agreement gives you a competitive advantage. Revise
the fourth sentence
         to clarify, if true, that Hennessy III and Nomura entered the
agreement post-IPO. Also,
         tell us whether Hennessy III disclosed the identity of the business
acquisition candidate to
         Nomura prior to execution of the backstop facility.
 Daniel Hennessy
FirstNameCapital Acquisition Corp IV
Hennessy LastNameDaniel Hennessy
Comapany NameHennessy Capital Acquisition Corp IV
October 15, 2018
October 15, 2018 Page 3
Page 3
FirstName LastName
Corporate Information, page 6

8.       Please supplementally provide us with copies of all written
communications, as defined in
         Rule 405 under the Securities Act, that you, or anyone authorized to
do so on your
         behalf, present to potential investors in reliance on Section 5(d) of
the Securities Act,
         whether or not they retain copies of the communications.
Founder shares, page 10

9.       Please show us the calculations supporting your disclosure regarding
the number of public
         shares needed to vote in favor of a transaction, given your disclosure
that approval
         requires only a majority of outstanding shares voted.
Manner of conducting redemptions, page 18

10.      Please revise the disclosure on page 19 and elsewhere as applicable to
clarify whether
         the 12.5 million Class A shares underlying the Nomura forward purchase
agreement could
         be exercised and voted in favor of the initial business combination.
If so, revise here and
         elsewhere to disclose whether the Sponsor and Nomura could control a
majority of the
         shares eligible to vote on the combination.
If we seek stockholder approval..., page 30

11.      Please revise to clarify whether Nomura may elect to purchase shares
or warrants from
         public shareholders.
Certain Relationships and Related Party Transactions, page 118

12.      You state that you have agreed to pay an affiliate of your sponsor a
total of $15,000 per
         month for office space, utilities and secretarial and administrative
support. Please identify
         the affiliate. Refer to Item 404(a)(1) of Regulation S-K.
Founder Shares, page 124

13.      We note that holders of founder shares have agreed to waive (i) their
redemption rights
         with respect to any founder shares and any public shares held by them
in connection with
         the completion of our initial business combination, (ii) their
redemption rights with
         respect to their founder shares and public shares in connection with a
stockholder vote to
         amend the certificate of incorporation with respect to certain
matters, and (iii) their rights
         to liquidating distributions from the trust account with respect to
any founder shares held
         by them if the initial business combination is not completed within 24
months from the
         offering's closing. Please clarify here, and elsewhere in the
prospectus as appropriate,
         whether permitted transferees would be subject to the same agreements.
 Daniel Hennessy
Hennessy Capital Acquisition Corp IV
October 15, 2018
Page 4
Exclusive forum for certain lawsuits, page 131

14.    You state that your amended and restated certificate of incorporation
will require "to the
       fullest extent permitted by law" that derivative actions brought in your
name may be
       brought only in the Court of Chancery in the State of Delaware. Please
revise to clarify
       whether the charter provision applies to actions arising under the
federal securities laws.
       Also ensure that the exclusive forum provision in your proposed
organizational documents
       clarifies its applicability. In this regard, we note that Section 27 of
the Exchange Act
       creates exclusive federal jurisdiction over all suits brought to enforce
any duty or liability
       created by the Exchange Act or the rules and regulations thereunder.
Underwriting (Conflicts of Interest), page 142

15.    Please refer to Item 508(e) of Regulation S-K and revise the table on
page 143 to disclose
       the value of the forward purchase agreement. In this regard, we note
your disclosure on
       page 144 that any purchase shares will be considered underwriting
compensation in
       connection with the offering. Also, revise the table to the extent the
Business
       Combination Marketing Agreement is deemed to be underwriter's
compensation.
General

16.    Please provide us proofs of all graphics, visual, or photographic
information you
       will provide in the printed prospectus prior to its use, for example in
a preliminary
       prospectus. Please note that we may have comments regarding this
material.
       You may contact Christine Torney at 202-551-3652 or Sharon Blume at
202-551-3474 if
you have questions regarding comments on the financial statements and related
matters. Please
contact Dorrie Yale at 202-551-8776 or Joe McCann at 202-551-6262 with any
other questions.



                                                              Sincerely,
FirstName LastNameDaniel Hennessy
                                                              Division of
Corporation Finance
Comapany NameHennessy Capital Acquisition Corp IV
                                                              Office of
Healthcare & Insurance
October 15, 2018 Page 4
cc:       Joshua Englard, Esq.
FirstName LastName