This article suggests that Simone de Beauvoir's The Second Sex offers an important contribution to a feminist phenomenology of temporality. In contrast to readings of The Second Sex that focus on the notion of "becoming" as the main claim about the relation between "woman" and time, this article suggests that Beauvoir's discussion of temporality in volume II of The Second Sex shows that Beauvoir understands the temporality of waiting, or a passive present, to be an underlying structure of women's existence and subordination. Accordingly, I argue that Beauvoir does not see "woman" as a mere becoming, as that which unfolds in time, but instead understands becoming a woman to be realized as lived time. As such, Beauvoir's account shows that gender and temporality are deeply entangled, and thus she challenges the classic phenomenological account of temporality as a general, given structure of human existence. More specifically, I argue that her account shows how a particular experience of time is an underlying structure of sexual objectification, a claim that expands on the feminist phenomenological claim that a particular relation to space becomes a way in which women take up and negotiate their own subordination and objectification.In this essay, I show that Simone de Beauvoir's The Second Sex offers a feminist phenomenology of temporality. I argue that by paying attention to temporality as a central theme in Beauvoir's descriptive account of becoming a woman, we see that gender and temporality are co-constitutive phenomena.