Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the reference to our firm under the caption "Experts" and to the use of our report dated March 5, 2021 with respect to the consolidated financial statements of Ostin Technology Group Co., Ltd, for the years ended September 30, 2019 and 2020, and the related statements of operations, comprehensive income, stockholders’ equity, and cash flows and the related notes and schedules (collectively referred to as the “financial statements”) for each of the two years ended September 30, 2020, in this Amendment No.4 to the Registration Statement on Form F-1 of Ostin Technology Group Co., Ltd and the related Prospectus of Ostin Technology Group Co., Ltd filed with the Securities and Exchange Commission.

TPS Thayer, LLC 

Sugar Land, Texas

September 20, 2021