Exhibit 21.1

SUBSIDIARIES OF THE REGISTRANT

Name of Subsidiary	State or Other Jurisdiction of Incorporation or Organization	Ownership Interest			Names Under Which Subsidiary Does Business
NTI ASEAN LLC	Delaware		60	%	Same
Northern Technologies Holding Company, LLC	Delaware		100	%	Same
Natur-Tec India Prívate Limited	India		90	%	Same
Zerust Prevenção de Corrosão S.A.	Brazil		85	%	Same
NTIC (Shanghai) Co., Ltd.	China		100	%	Same
ZERUST-EXCOR MEXICO, S. de R.L. de C.V	Mexico		100	%	Same
NTIC Europe GmbH	Germany		100	%	Same