又名生空、我空，二空之一。觀人為五蘊之假和合，又為因緣所生，知中無常一之我體，故云人空。證此人空之理因而斷一切煩惱，終得涅槃果，是乃小乘之至極也。又大乘立一切法有真如性，空人我之執者，言人空之顯真如也。孔目章三曰：「我執無處所顯真如名人空。」唯識述記一本曰：「智緣空起為所由門，顯二真如名二空理。（中略）如是空性，即是二空所顯實性。」
Man is only a temporary combination formed by the five skandhas and the twelve nidānas, being the product of previous causes, and without a real self or permanent soul. Hīnayāna is said to end these causes and consequent reincarnation by discipline in subjection of the passions and entry into nirvana by the emptying of the self. Mahāyāna fills the "void" with the Absolute, declaring that when man has emptied himself of the ego he realizes his nature to be that of the absolute,bhūtatathatā; v. 二空.
又名生空，或我空，即觀人身是五蘊假合而有，其性本空，亦即悟五蘊無我的真理。