Mayo Energy Agency Official Website
- Body promoting energy efficiency, energy conservation and renewable energy within the county. Includes details of services, location, energy news, energy saving tips and childrens educational games.
- http://www.mayoenergy.ie

Mayo Guide from Mayo County Council
- Official local government site lists resources for the county's visitor attractions, events, transport and accommodation.
- http://www.mayo.ie

Mayo on the Move
- A wide-ranging directory and reference source for the county.
- http://www.mayo-ireland.ie/MotM.htm

Mayo Live
- Local guide and community directory of businesses.
- http://www.mayolive.com

Mayo County Council
- Official site for the local government of County Mayo.
- http://www.mayococo.ie