EXHIBIT 21.1

JOHNSON CONTROLS INTERNATIONAL PLC

The following is a list of significant subsidiaries of Johnson Controls International plc, as defined by Section 1.02(w) of Regulation S-X, as of September 30, 2021.

Name of Company	Jurisdiction Where Subsidiary is Incorporated
Johnson Controls Fire Protection LP	Delaware, United States
Johnson Controls Security Solutions LLC	Delaware, United States
Johnson Controls, Inc.	Wisconsin, United States