Watchsearcher
- Searchable database of stolen and lost Swiss luxury watches. Many loss prevention hints are also mentioned
- http://www.watchsearcher.com/

International Watch Fob Association
- Organization for collectors of watch fobs.
- http://www.watchfob.com/

The Antiquarian Horological Society
- A learned Society dedicated to the study of antiquarian clocks, watches and other forms of timekeeping.
- http://www.ahsoc.demon.co.uk/

The Federation of the Swiss Watch Industry FH
- Info on swiss made watches, glossary, a watch FAQ, links to watch brands official websites, news, history, and statistics.
- http://www.fhs.ch/

The Worshipful Company of Clockmakers
- Founded by a Royal Charter in 1631, this London guild is one of the oldest horological organizations.
- http://www.clockmakers.org/

Horology - The Index: Membership Organizations
- Comprehensive global list of membership organizations of interest to collectors of clocks and watches and other horologists, both enthusiasts and professionals.
- http://www.horology.com/ho-membr.html

British Horological Institute
- Place for hints and tips on clock and watch repair. Also includes a Identification Photo Database with modern and antique clock and watch movements.
- http://www.bhi.co.uk/

The National Association of Watch and Clock Collectors, Inc.
- Dedicated to the collection, restoration, research and appreciation of all manner of clocks, watches, and sun dials. They have many resources to help everyone from new collectors to experienced professionals.
- http://www.nawcc.org/