Exhibit 99.9

Raymond Chabot

Grant Thornton LLP

Suite 2000

National Bank Tower

600 De La Gauchetière Street West

Montréal, Quebec

H3B 4L8

Consent of Independent Registered    T 514-878-2691

Public Accounting Firm

We have issued our report dated June 9, 2021, with respect to the consolidated financial statements of Alithya Group inc. (the “Company”) for the year ended March 31, 2021, included as an Exhibit to the Annual Report of the Company. on Form 40-F for the fiscal year ended March 31, 2022.

We consent to the inclusion of said report in the Annual Report of Alithya Group inc. on Form 40-F for the fiscal year ended March 31, 2022.

We also consent to the incorporation by reference of said report in the Registration Statement of Alithya Group inc. on Form S-8 (File No. 333-228487).

Montréal, Canada

June 17, 2022

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