Equestrian
Initiative
One initiative. Two ways to belong.
Whether you are an individual equestrian or an organisation, your next step starts here.
SEI Equestrians
One Community. One Shared Passion for Horses.
Join equestrians across Europe who share a love for horses and a commitment to a responsible equestrian future. Take part, share your journey and make every contribution count. Build your profile. Connect. Share. Earn Equestrian Points.
Join SEISEI Organisations
One Standard. One Certification. One Equestrian Future.
SEI is the European sustainability certification programme for the equestrian sector, providing one evidence-based standard for responsible equestrian operations, with horse wellbeing at its core and independent third-party certification.
Join SEIThe future starts here
Stay connected with the future of equestrianism.
SEI
SEI — Sustainable Equestrian Initiative. An evidence-based sustainability certification standard created for the equestrian world, with horse wellbeing at its centre. Established 2023, The Netherlands.
SEI | Sustainable Equestrian Initiative
Address: Nicolaes Maestraat 2, Office 213
1506 LB Zaandam, The Netherlands
Telephone: 0031-(0)85-301 0650
Dutch Chamber of Commerce: 67691951
EU VAT (VIES): NL857133147B01
© 2026 Sustainable Equestrian Initiative. All rights reserved.
Responsible equestrianism. Proven for the future.