Exhibit 99.5

CONSENT

Big Sky Growth Partners, Inc. is filing a Registration Statement on Form S-1 (together with any amendments or supplements thereto the “Registration Statement”), registering securities for issuance in its initial public offering. As required by Rule 438 under the Securities Act of 1933, as amended, the undersigned hereby consents to being named in the Registration Statement as a Director Nominee.

/s/ Mike Smith

Mike Smith

Date: February 25, 2021