Brooke Hospital, which provides veterinary and welfare services to working horses in developing countries, is forging links with the UK racing industry to raise income to expand its work overseas.
Horses for Courses is a multi-event fundraising programme that will include race nights at nine UK race courses. It has enlisted support from the Jockey Club, the Racecourse Association and the British Equestrian Federation.
The charity wants to increase the number of animals it treats from 500,000 to five million.
Brooke was founded 70 years ago but only attempted to raise awareness in the equestrian community in the past year. John Trampleasure, director of fundraising and communications, said it had taken a year to develop the concept and get industry backing.
Brooke works with communities in sub-Saharan Africa, Central America and Afghanistan. Trampleasure said: "We are doing this through our new partnership programme working with local NGOs. It is something the racing community knew nothing about."