The move follows the withdrawal of the team's top rider, Silvia Ikle, who doesn't want to expose her horse to travel-related stress and the humid conditions in Hong Kong in the summer.
“Ikle's decision not to participate has consequences for the entire national dressage team,” the Swiss equestrian federation said Tuesday in a statement.
Switzerland said it had only qualified for the event due to the performance of Ikle and her horse, Salieri.
“The dressage selection committee of the federation has therefore decided not to send any individuals or teams to take part in the dressage competition in Hong Kong,” the statement said.