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We consent to the incorporation by reference in the Registration Statements (Form S-8 (333-226687) and Form S-3 (333-226659)) of Great Western Bancorp, Inc. of our reports dated November 27, 2019, with respect to the consolidated financial statements of Great Western Bancorp, Inc., and the effectiveness of internal control over financial reporting of Great Western Bancorp, Inc., included in this Annual Report on Form 10-K of Great Western Bancorp, Inc. for the year ended September 30, 2019.