Clethra longispicata is a tree in the family Clethraceae. The specific epithet ' is from the Latin meaning 'long spike', referring to the inflorescence.
Clethra longispicata grows up to tall. The fissured bark is brown. The scented flowers are white. The roundish fruits measure up to in diameter.
Clethra longispicata grows naturally in Borneo, the Philippines and Sulawesi. Its habitat is hill and forests from to altitude.