The following rider/horse combinations have declared for the 2012 Olympic Games as of May 30, 2012.

Denotes a Canadian-bred horse

DRESSAGE (alphabetical order)
Athlete Name	Horse(s)
Christilot Boylen	Dio Mio
Jacqueline Brooks	D Niro Gran Gesto
Ute Busse	Lindor's Finest
Lorraine Chappell	Carpatino
Diane Creech	Devon L
Shannon Dueck	Ayscha
Susanne Dutt-Roth	Rheirattack
Tom Dvorak	Corrigan Viva's Salieri W
Pia Fortmuller	Orion
Rebecca Garrard	Och Heden
Ashley Holzer	Breaking Dawn Pop Art
Jill Irving	Degas 12 Delvaux
Stephanie Jensen	Addiction
Rochelle Kilberg	Rudy
Crystal Kroetch	Lymrix
Alexandria Lampe (Wilson)	De La Vega
Megan Lane	Caravella
Janine Little	Dominic LHF
Nancy MacLachlan	Deniros Tyme
David Marcus	Capital Don Kontes
Karen Pavicic	Don Daiquiri
Joni Lynn Peters	Travolta
Sarah Sjoholm-Patience	Desiderata
Evi Strasser	Action Tyme Quantum Tyme Renaissance Tyme
Lindsey Stroh	Lancelot
Belinda Trussell	Anton
Gary Vander Ploeg	Cezanne Degas
Victoria Winter	Proton
Penny Zavitz-Rockx	Verdi De La Fazenda

EVENTING (alphabetical order)
Athlete Name	Horse(s)
Diana Burnett	Diamond Cut III Manny Shigatzi
Hawley Bennett-Awad	Gin N Juice
James Atkinson	Gustav
Jessica Hampf	High Society III
Jessica Phoenix	Exponential Pavarotti
Jordan McDonald	Apple Cider
Karl Slezak	VDL Ulando H
Kathryn Robinson	Let It Bee
Kendal Lehari	Daily Edition
Lindsay Pearce	Candar van het Neerveld Saniki
Michelle Mueller	Amistad
Micheline Jordan	Irish Diamonds
Peter Barry	Kilrodan Abbott
Rebecca Howard	Riddle Master
Sandra Donnelly	Buenos Aires
Selena O'Hanlon	Colombo
Shandiss Wewiora	Rockfield Grant Juan
Stephanie Rhodes-Bosch	Port Authority