Piia Pantsu (born March 29, 1971, in Varkaus, Finland) is a Finnish equestrian rider. She competes in three-day eventing and in show jumping competitions. She is married to Fredrik Jönsson who was the son of her trainer, Jan Jönsson.
She competed in the individual eventing at the 2000 Summer Olympics. She would have also been at Athens but an injury to her horse prevented it.
(eventing championships)