Canarium apertum is a species of tree in the family Burseraceae. The specific epithet apertum means 'open', referring to the openings between petals.
Canarium apertum grows up to tall with a trunk diameter of up to . The scaly bark is grey-brown. The flowers are yellow-brown. The fruits are and measure up to long.
Canarium apertum grows naturally in Sumatra, Peninsular Malaysia and Borneo. Its habitat is lowland mixed dipterocarp forest from sea-level to altitude.