No — reliable public sources do not currently confirm that Monty Roberts is left-handed.

Monty Roberts, born on May 14, 1935, is an American horse trainer, author, and lecturer. He is widely known for his non-violent horse training methodology, which he calls "Join-Up," inspired by observations of wild horse behavior.

Roberts advocates for a communication system based on the horse's natural body language rather than traditional dominance-based or punitive methods. His approach emphasizes understanding and partnership between horses and humans.

His work has gained international acclaim, and he has demonstrated his techniques globally, including for Queen Elizabeth II. He has authored several books, including his autobiography, "The Man Who Listens to Horses."

Roberts' methods have been influential in the equestrian world, promoting a more humane and effective way to interact with horses. He founded the Monty Roberts International Learning Center to teach his principles to others.