Horse by Traditional

Diagrams in World's Best Origami by Nick Robinson
Each folded from a square of Tant paper

Horse 3 by Gen Hagiwara

Diagrams in Spirits of Origami by Gen Hagiwara
Wet-folded from a square of scrapbooking paper

Horse and rider by Carl Adolf Senff

Diagrams in AEP convention 2003
Diagrams in Quadrato Magico Magazine 77
Each folded from a square of Tant paper

Horse head by Yara Yagi

Diagrams in BOS Convention 2014 Spring
Diagrams in BOS Magazine 285
Diagrams in Origami Deutschland 2015
Folded from a square of art paper

Horse mask by Hsi-Min Tai

Diagrams in Origami Masks of Chinese Zodiac Animal by Hsi-Min Tai
Diagrams in Origami USA Convention 2014
Diagrams in The Origami Collection of Hsi Min Tai by Hsi-Min Tai
Folded from a square of origami paper

Horse with rider by John Montroll

Diagrams in Bringing Origami to Life by John Montroll
Diagrams in Horses in Origami by John Montroll
Folded from a square of thin brown wrapping paper

Horseman by David Brill

Diagrams in Brilliant Origami by David Brill
Folded from a rectangle of thin brown wrapping paper

Lippizan by John Montroll

Diagrams in Horses in Origami by John Montroll
Folded from a square of cardstock

Mustang by John Montroll

Diagrams in Horses in Origami by John Montroll
Folded from a square of Lokta

Pony by John Montroll

Diagrams in Horses in Origami by John Montroll
Folded from a square of Elephant-Hide