is a species of flowering plant in the poppy family Papaveraceae, native to Siberia, northern China, Korea and Japan. It is the sole species in the monotypic genus Lamprocapnos, but is still widely referenced in the UK under its old name Dicentra spectabilis (now listed as a synonym). It is valued in gardens and in floristry for its heart-shaped pink and white flowers, borne in spring.

First plants specimens were introduced into England in the 1840s from Japan by the Scottish botanist and plant hunter Robert Fortune.

There is also a legend from Japan which tells a story of how the bleeding heart flower came to be. In the story, a young man tried to win the love of a young lady. He did this by giving a pair of rabbits (which are the first two petals of the flower), a pair of slippers (which are the next two petals of the flower), and finally a pair of earrings (which are the last two petals of the flower) to the girl. She continued to reject his affections, and, heart-broken, he pierced his heart with his sword (the middle part of the flower) which caused the bleeding heart.