Exhibit 21.1

List of Subsidiaries of Rapid7, Inc.

Company Name						Jurisdiction
Rapid7 Australia Pty Ltd.						Australia
Rapid7 Canada, Inc.						Canada
Rapid7 Germany GmbH						Germany
Rapid7 France SAS						France
Rapid7 International Group Limited						United Kingdom
Rapid7 International Holdings Limited						United Kingdom
Rapid7 International Limited						United Kingdom
Rapid7 Ireland Limited						Ireland
Rapid7 Japan KK						Japan
Rapid7 LLC						Delaware
Rapid7 Netherlands B.V.						Netherlands
Rapid7 Singapore Pte. Ltd.						Singapore
Alcide.IO Limited						Israel
Alcide.IO, Inc.						Delaware
NetFort Technologies Limited						Ireland