Queer theory and queer geographies are difficult to define. The concept of queer is often associated with identities such as lesbian, gay, bisexual, transgender, and intersex (LGBTI). Yet, queer is also a perspective, or a way of thinking and knowing. It calls attention to taken-for-granted assumptions regarding bodies, genders, sex, and sexualities. One of the main contributions queer theory has made to studies of sexualities is a critique of sexual identity politics. Queer theory sits precariously with constructions of queer identities, places, and spaces. The word "queer" is not fixed, and its meaning is socially produced through language. What it means to be queer, and what can be queered, have multiple meanings and are subject to change over place, space, and time.Studies of sexualities are heavily influenced by postmodernism, poststructuralism, and anti-essentialism. Social theorists, including geographers, employ different understandings of bodies, places, and spaces in order to question grand claims and single truths of the modernist era. A postmodern approach recognizes that all knowledge is partial, fluid, often queer, and contradictory. There is recognition of difference and multiple truths, realities, voices, and identities. Queer theory -viewed through a poststructural theoretical lens -challenges ideas of preconstituted sexual subjects and allows for the examination of power as productive rather than as merely oppressive. This approachThe International Encyclopedia of Geography. Edited