Oaktree Specialty Lending (OCSL) 8-K Changes in Registrant's Certifying Accountant

Exhibit 16.1

January 8, 2018

Securities and Exchange Commission

100 F Street, N.E.

Washington, DC 20549

Commissioners:

We have read the statements made by Oaktree Specialty Lending Corporation (copy attached), which we understand will be filed with the Securities and Exchange Commission, pursuant to Item 304(a)(1) of RegulationS-K, as part of Item 4.01 of Form8-K of Oaktree Specialty Lending Corporationdated January 8, 2018. We agree with the statements concerning our Firm contained therein.

Very truly yours,

/s/ PricewaterhouseCoopers LLP

New York, New York

PricewaterhouseCoopers LLP, PricewaterhouseCoopers Center, 300 Madison Avenue, New York, NY 10017

T: (646) 471 3000, F:(813) 286 6000, www.pwc.com/us