There is no single clinical guidelines database as such. However, some of the countries leading the development of clinical guidelines maintain databases of their own guidelines and some reference international resources. In recognition of the need to identify and access guidelines in physical therapy the PEDro  database now includes guidelines. The following websites should help in identifying published guidelines.
- Australian National Health and Medical Research Council clinical practice guidelines
- Canadian Medical Association infobase of clinical practice guidelines
- Guidelines International Network (G-I-N)
- L'agence nationale d'accréditation et d'évaluation en santé
- National Institute for Clinical Excellence
- National Library for Health guidelines database
- New Zealand Guidelines Group
- Scottish Intercollegiate Guidelines Network
- US National Guidelines Clearing House
The Australian National Health and Medical Research Council  clinical practice website provides access to publications from the NHMRC.
The Canadian Medical Association infobase  is a database of guidelines produced or endorsed in Canada by a national, provincial/territorial or regional medical or health organisation, professional society, government agency or expert panel.
The eGuidelines  site provides comprehensive information and practical solutions for clinical effectiveness. It includes the full text of the journals 'Guidelines' and 'Guidelines in Practice', as well as the CLIP database of clinical improvements, on which you can find guidelines. Published by MGP Ltd, UK.
The Guidelines International Network  (G-I-N) provides limited free searching and then subscription service for full international guidelines database. Compiled by member organisations of GIN involved in guidelines development.
The site for a National French Agency developing clinical guidelines . This site is in French only but some of the clinical guidelines publications are available in English .
The National Institute for Clinical Excellence  (NICE) in England produces multi-professional clinical guidelines and appraisals of technologies, which are issued as guidance to the National Health Service. You can access full-text publications and find out about work in progress with anticipated timescales.
The National Library for Health (NLH) guidelines database  focuses on guidelines produced in the UK, but where no UK guideline is available, guidelines from other countries are included in the collection.
The New Zealand Guidelines Group  leads a movement towards the delivery of high quality health and disability service throughout New Zealand through a change of culture based on evidence and effectiveness. It also acts as a reference source for guideline material in New Zealand.
The Scottish Intercollegiate Guidelines Network  (SIGN) was formed in 1993. It aims to improve the quality of health care for patients in Scotland by reducing variation in practice and outcome, through the development and dissemination of national clinical guidelines containing recommendations for effective practice based on current evidence. This site provides links to HTA sites around the world.
The National Guideline Clearing House  (NGC) is a comprehensive database of evidence-based clinical practice guidelines and related documents produced by the Agency for Healthcare Research and Quality (AHRQ)  (formerly the Agency for Health Care Policy and Research [AHCPR]), in partnership with the American Medical Association (AMA)  and the American Association of Health Plans (AAHP) .