On behalf of Triangle Capital Corporation (“Triangle” or the “Company”), and in response to oral comments received from the staff of the Division of Investment Management (the “Staff”) of the Securities and Exchange Commission (the “Commission”) on July 2, 2014 and July 3, 2014 (the “Comments”) relating to Post-Effective Amendment No. 8 (“PEA 8”) to the Company’s Registration Statement filed on Form N-2 on June 27, 2014, we submit this letter containing the Company’s responses to the Staff’s Comments.

Response: In response to the Staff’s comment, the Company has provided an estimate of the annual expenses for interest payments on debt securities and the accompanying assumptions within a footnote.

Response: We confirm on the Company’s behalf that the Company undertakes to file a post-effective amendment to its currently effective registration statement, and provide an opportunity for the Staff to review such filing, prior to offering any unsecured unsubordinated notes that differ materially from its currently outstanding Senior Notes due 2019 and Senior Notes due 2022 other than with respect to price, term and offering size. Such a post-effective amendment may include a prospectus supplement for an existing proposed transaction or a form prospectus supplement that may be used going forward following Staff review of the form. Notwithstanding its concerns that to do so may confuse purchasers of such future notes that will rank pari passu with the Company’s currently outstanding indebtedness, the Company confirms that it will remove the term “senior” from any future offering of unsecured unsubordinated notes that are structured consistently with the Company’s currently outstanding Senior Notes due 2019 and Senior Notes due 2022. The Company also will consider repeating disclosures regarding the priority in interest of any such notes to the line of credit and debt issuances by the Company’s subsidiaries in more places within the prospectus supplement for any such notes to help ensure that prospective purchasers read such disclosure.

Accounting Comments

Response: As discussed with the Staff on July 2, 2014, the Company respectfully advises the Staff that the expense ratio in the financial highlights table does not include a provision for income taxes. The Company and its auditors have historically taken the position that such provision is immaterial and that the Company should disclose provisions for income tax expense consistently with the manner in which it discloses any net income tax benefits. The Company acknowledges the Staff’s position and hereby

confirms that it will include any provision for income tax (net of applicable benefits) in future financial highlights tables.

Response: The Company acknowledges the comment and confirms that it will disclose the expense ratio to two decimal places in future filings.

A.    The Company is responsible for the adequacy and accuracy of the disclosure in its filings with the Commission;

B.    The Staff comments or changes to disclosure in response to Staff comments in the filings reviewed by the Staff do not foreclose the Commission from taking any action with respect to such filings; and

C.    The Company may not assert Staff comments as a defense in any proceeding initiated by the Commission or any person under the federal securities laws of the United States.

   /s/ Scott Lesmes