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Exhibit 21.1

Aerojet Rocketdyne Holdings, Inc.

100% Owned Subsidiaries

As of December 31, 2022

Name of Entity									State of Incorporation
Aerojet Rocketdyne, Inc.									Ohio
			Aerojet International, Inc.						California
			Aerojet Ordnance Tennessee, Inc.						Tennessee
			Aerojet Rocketdyne Coleman Aerospace, Inc.						Delaware
			Aerojet Rocketdyne of DE, Inc.						Delaware
			Arde, Inc.						New Jersey
			Arde-Barinco, Inc.						New Jersey
			Chemical Construction Corporation						Delaware
			Cordova Chemical Company						California
			Cordova Chemical Company of Michigan						Michigan
			Easton Development Company, LLC (5% owned by Aerojet Rocketdyne, Inc.)						California
			GT & MC, Inc.						Delaware
			TKD, Inc.						California
Easton Development Company, LLC (95% owned by Aerojet Rocketdyne Holdings, Inc.)									California
Novadyne Energy Systems LLC									Delaware
GDX LLC									Delaware
RKO General, Inc.									Delaware