EXHIBIT 21

SUBSIDIARIES

OF

TELEDYNE TECHNOLOGIES INCORPORATED

Name of Subsidiary	State/Jurisdiction of Incorporation	Fictitious Business Name(s) Used by Subsidiary
Ensambles de Precision S.A. de C.V.	Mexico
Intelek Limited	United Kingdom
Intelek Pension Trustees Limited	United Kingdom
Intelek Properties Limited	United Kingdom
LeCroy (Beijing) Trading Co., Ltd.	China
Lidar Aviation Services, Inc.	Ontario, Canada
Maple Imaging, LLC	Delaware
Ocean Design Ltda.	Brazil	Teledyne ODI Brasil Teledyne Óleo & Gás
Rhombi Canada LP	Ontario, Canada
Rhombi Holdings Limited	United Kingdom
TDY Jersey Limited	Bailiwick of Jersey
Teledyne Australia Pty Ltd	Australia	Teledyne Defence Australia
Teledyne Bowtech Limited**	United Kingdom
Teledyne Brown Engineering, Inc.	Delaware	Teledyne Turbine Engines
Teledyne C.M.L. Group Limited	United Kingdom
Teledyne CARIS B.V.	Netherlands
Teledyne Controls, LLC	Delaware
Teledyne Czech s.r.o.	Czech Republic
Teledyne DALSA (Shanghai) Trading Co., Ltd.	China
Teledyne DALSA B.V.	Netherlands
Teledyne DALSA GmbH	Germany
Teledyne DALSA KK (to be merged out on February 28, 2019)	Japan
Teledyne DALSA Semiconductor Inc.	Ontario, Canada
Teledyne Defense Electronics, LLC	Delaware	Teledyne Coax Switches Teledyne e2v Teledyne e2v HiRel Electronics Teledyne e2v US Teledyne MEC Teledyne Microwave Teledyne Microwave Solutions Teledyne Paradise Datacom Teledyne Relays Teledyne Reynolds Teledyne Storm Microwave Teledyne TWT Products Teledyne Wireless

1

Name of Subsidiary	State/Jurisdiction of Incorporation	Fictitious Business Name(s) Used by Subsidiary
Teledyne Digital Imaging US, Inc.	Delaware	Teledyne Acton Research Teledyne Caris Teledyne Integrated Designs Teledyne Photometrics Teledyne Princeton Instruments Teledyne Rad-icon Imaging
Teledyne Digital Imaging, Inc.	Ontario, Canada	Teledyne Caris Teledyne Dalsa Teledyne Optech
Teledyne Denmark A/S	Denmark
Teledyne e2v (Beijing) Co., Ltd.	China
Teledyne e2v (Overseas) Holdings Limited	United Kingdom
Teledyne e2v (UK) Limited	United Kingdom
Teledyne e2v Asia Pacific Limited	Hong Kong
Teledyne e2v GmbH	Germany
Teledyne e2v Korea Ltd.	South Korea
Teledyne e2v Limited	United Kingdom
Teledyne e2v Semiconductors SAS	France
Teledyne Energy Systems, Inc.	Delaware
Teledyne France SAS	France	Teledyne RD Instruments Europe
Teledyne Gavia ehf.	Iceland
Teledyne ICM SPRL	Belgium
Teledyne Innovaciones Microelectronics, S.L.U.	Spain
Teledyne Instruments Malaysia Sdn. Bhd.	Malaysia

2

Name of Subsidiary	State/Jurisdiction of Incorporation	Fictitious Business Name(s) Used by Subsidiary
Teledyne Instruments, Inc.	Delaware	Teledyne Advanced Chemistry Systems Teledyne Advanced Monitoring Solutions Teledyne Advanced Pollution Instrumentation Teledyne A-G Geophysical Products Teledyne AGG Teledyne Analytical Instruments Teledyne API Teledyne Benthos Teledyne BlueView Teledyne Cable Solutions Teledyne CETAC Technologies Teledyne Cormon Teledyne D.G. O’Brien Teledyne Geophysical Instruments Teledyne Hanson Research Teledyne Hastings Instruments Teledyne Impulse Teledyne Isco Teledyne Laboratory and Field Instruments Teledyne Leeman Labs Teledyne Marine Teledyne Marine Interconnect Solutions Teledyne Monitor Labs Teledyne Oceanscience Teledyne ODI Teledyne Odom Hydrographic Teledyne Oil & Gas Teledyne Process and Air Quality Instruments Teledyne RD Instruments Teledyne RDI Teledyne Real Time Systems Teledyne RTS Teledyne SeaBotix Teledyne SSI Teledyne Taptone Teledyne Tekmar Teledyne Webb Research Teledyne Taptone Teledyne Tekmar Teledyne TSS Teledyne Webb Research
Teledyne Labtech Limited	United Kingdom
Teledyne LeCroy AB**	Sweden
Teledyne LeCroy GmbH	Germany
Teledyne LeCroy India Trading Private Ltd.	India
Teledyne Japan Corporation	Japan
Teledyne Korea, Ltd.	South Korea
Teledyne LeCroy S.A.R.L.	France
Teledyne LeCroy S.R.L.	Italy
Teledyne LeCroy SA	Switzerland

3

Name of Subsidiary	State/Jurisdiction of Incorporation	Fictitious Business Name(s) Used by Subsidiary
Teledyne LeCroy, Inc.	Delaware	Teledyne LeCroy Frontline Teledyne LeCroy Protocol Solutions Group Teledyne Test Services Teledyne Test Tools
Teledyne LeCroy Singapore Pte. Ltd. (to be merged out February 28, 2019)	Singapore
Teledyne Limited	United Kingdom	Teledyne Bowtech Teledyne CML Composites Teledyne Controls (UK) Teledyne Cormon Teledyne Defence and Space Teledyne Geophysical Instruments (UK) Teledyne Impulse- PDM Teledyne Labtech Teledyne LeCroy (UK) Teledyne Oil & Gas Teledyne Paradise Datacom Teledyne Relays (UK) Teledyne Reynolds (UK) Teledyne TSS
Teledyne Lumenera Corporation	Nova Scotia, Canada
Teledyne Netherlands B.V.	Netherlands
Teledyne Optech, Inc.	Delaware
Teledyne Paradise Datacom Limited	United Kingdom
Teledyne Quantitative Imaging Corporation	Canada
Teledyne Redlake MASD, LLC	Delaware
Teledyne RESON A/S	Denmark
Teledyne RESON B.V.	Netherlands
Teledyne RESON GmbH	Germany
Teledyne RESON Holding B.V.	Netherlands
Teledyne RESON Pte. Ltd. (to be struck off)	Singapore
Teledyne RESON UK Limited**	United Kingdom
Teledyne RESON, Inc.	California
Teledyne RISI, Inc.	California	Teledyne Electronic Safety Products Teledyne Energetics
Teledyne Scientific & Imaging, LLC	Delaware	Teledyne Imaging Sensors Teledyne Judson Technologies Teledyne Scientific Company
Teledyne Scientific Imaging GmbH	Germany
Teledyne Scientific Imaging Limited	United Kingdom
Teledyne SG Brown Limited	United Kingdom
Teledyne Signal Processing Devices Sweden AB	Sweden
Teledyne Singapore Private Limited	Singapore

4

Name of Subsidiary	State/Jurisdiction of Incorporation	Fictitious Business Name(s) Used by Subsidiary
Teledyne Taiwan Company	Taiwan
Teledyne Technologies (Bermuda) Limited	Bermuda
Teledyne Technologies (Shanghai) Co., Ltd.	China
Teledyne Technologies International Corp.	Delaware
Teledyne TSS Limited**	United Kingdom
Teledyne VariSystems, Inc.	Alberta, Canada

**In liquidation

5