Exhibit 21

Kadant Inc.

Subsidiaries of the Registrant

At March 1, 2012, the Registrant owned the following companies:

Name	State or  Jurisdiction of Incorporation	Percent of Ownership
ArcLine Products LLC	New York		100
Kadant Black Clawson Inc.	Delaware		100
Kadant Fibergen Inc.	Delaware		100
Kadant GranTek Inc.	Delaware		100
Kadant Composites LLC	Delaware		100
Kadant International Holdings Inc.	Delaware		100
Kadant Asia Holdings Inc.	Mauritius		100
Kadant Fiberline (China) Co., Ltd.	China		100
Kadant Pulp & Paper Equipment (Yanzhou) Co. Ltd.	China		100
Kadant International Luxembourg SCS (62.3% owned directly by Kadant International Holdings Inc.; and 37.7% owned by Kadant Johnson Inc.)	Luxembourg		100
Kadant Luxembourg SarL	Luxembourg		100
Kadant (Cyprus) Limited	Cyprus		100
Kadant Johnson Europe B.V.	Netherlands		100
Kadant Canada Corp.	Nova Scotia, Canada		100
Kadant Cyprus (Canada) Limited	Cyprus		100
Kadant U.K. Holdings Limited	England		100
Fibertek U.K. Limited	England		100
Kadant U.K. Limited	England		100
D.S.T. Pattern Engineering Company Limited	England		100
Vickerys Limited	England		100
Winterburn Limited	England		100
Kadant Mexico LLC	Delaware		100
Kadant Mexico, S.A. de C.V.	Mexico		100
Kadant Fiberline Commercial (Beijing) Co., Ltd.	China		100
Kadant Johnson Deutschland GmbH	Germany		100
Kadant Johnson France B.V.	Netherlands		100
Kadant Johnson Scandinavia AB	Sweden		100
Kadant Johnson Schweiz AG	Switzerland		100
Kadant Johnson Systems International Ltd.	England		100
Kadant Johnson Systems International S.r.l.	Italy		100
Prats Holding SAS	France		100
Techmo Systems SAS (20% owned by Kadant Johnson Systems International S.r.l.)	France		100
Johnson Corporation (JoCo) Limited	England		100
Johnson-Fluiten S.r.l.	Italy		50

Name	State or  Jurisdiction of Incorporation	Percent of Ownership
Kadant Lamort SAS	France		100
Kadant BC Lamort UK Ltd.	England		100
Kadant Cyclotech AB	Sweden		100
Kadant Lamort AB	Sweden		100
Kadant Lamort GmbH	Germany		100
Kadant Lamort S.A.	Spain		100
Kadant Lamort S.r.l.	Italy		100
Kadant M-Clean Holdings AB	Sweden		100
Kadant M-Clean AB	Sweden		100
M-Clean Papertech Investments	Malta		100
M-Clean Papertech Patent Ltd.	Malta		100
Kadant Johnson Inc.	Michigan		100
Kadant Johnson Argentina S.r.l.	Argentina		100
Kadant Johnson China-TZ Holding Inc.	Michigan		100
Tengzhou Feixuan Rotary Joint Manufacturing Co., Ltd.	China		100
Kadant Johnson China-WX Holding Inc.	Michigan		100
Kadant Johnson (Wuxi) Technology Co., Ltd.	China		100
Kadant Johnson Latin America Holding Inc.	Michigan		100
Kadant Johnson Latin America S.A.	Brazil		100
Kadant Johnson Southeast Asia Pty. Limited	Australia		100
Kadant Johnson Australia Pty. Limited	Australia		100
Kadant Johnson Corporation Asia Pacific Pty. Ltd.	Australia		100
Kadant Johnson Holdings Inc.	Michigan		100
The Johnson Corporation Mexico S.A. de C.V.	Mexico		100
Fiberprep Inc. (31.05% of which shares are owned directly by Kadant Lamort)	Delaware		100