Cornelis de Heem (* 1631 in Leiden; 1695 in Antwerp) was a Dutch painter of still lifes. He belongs to the Baroque style.
Cornelis came from a recognized and traditional family of artists who specialized in the depiction of opulent arrangements of flowers, fruits and books. He was the grandson of the painter David I. de Heem (1570-1639) from Utrecht, the eldest son of Jan Davidszoon de Heem (1606-1684), who was temporarily resident in Leiden and later settled in Antwerp, and the nephew of the Utrecht master David II. de Heem (1610-1669).
Like his considerably younger brother Jan Jansz de Heem (1650- after 1695), who emigrated to London in the following years, he worked in his father's flourishing Antwerp workshop. In 1660 he was admitted as a master to the Guild of Antwerp, the city in which he lived and worked throughout his life - apart from a stay in Leiden from 1676 to 1681 - and where he later included his son David Corneliszoon de Heem (1663-1718) in the family business.