Equestrian
Initiative
Start your SEI journey
Complete the form below and the SEI Team will contact you to confirm your activities, identify the applicable Activity Module(s), and guide you through the next steps.
What happens next
After registration, the SEI Team will contact you to confirm the applicable Module(s) and explain the next steps towards SEI participation and certification. The Core Mandatory Layer applies to every participant, together with the Activity Module(s) relevant to the activities included in your proposed certification scope.
The 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.