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Exhibit 21.1

List of Subsidiaries

The following is a list of subsidiaries of Mitek Systems, Inc., omitting certain subsidiaries which, considered in the aggregate as a single subsidiary, would not constitute a significant subsidiary as of September 30, 2025.

Name of EntityJurisdiction
A2iA Corp.United States of America
A2iA SASFrance
HooYu Ltd.United Kingdom
ICAR Mexico, Business Identity Intelligence S.A.Mexico
ID R&D, Inc.United States of America
Mitek Holding B.V.Netherlands
Mitek Systems B.V.Netherlands
Mitek Systems Canada, Inc.Canada
Mitek Systems IDV, S.L.U.Spain
Mitek Systems Private LimitedUnited Kingdom