William Siew Wai Lim (Chinese: 林少偉;[1] 19 July 1932 – 6 January 2023)[2] was a Singaporean architect.

He was a Fulbright Fellow in the Department of City and Regional Planning at Harvard University,[3] and returned to Singapore in 1957 after his studies.

His work began with the design of modernist structures for residential and commercial interests, and progressed to large-scale shopping centres in Singapore and Kuala Lumpur.

[6] He was conferred a Doctor of Architecture Honoris Causa by the Royal Melbourne Institute of Technology (RMIT) University, Australia, in 2002 and appointed Honorary Professor of LaSalle-SIA College of the Arts (Singapore) in 2005.

[citation needed] He was the author of Asian Alterity: With Special Reference to Architecture and Urbanism through The Lens of Cultural Studies (2008), as well as editor of Asian Design Culture (2009) and co-editor of Non West Modernist Past (2011).