Thyra Valborg Boldsen (1884–1968) was a Danish sculptor who created works in a naturalistic style using many different types of stone. She was particularly successful in the United States after moving to California in 1931. Four of her works were installed in Los Angeles' Exposition Park in 1936. In the 1920s, she lectured on art and wrote books on philosophical questions and lifestyle. Her work was part of the sculpture event in the art competition at the 1932 Summer Olympics.