Urban planning in Singapore is the direction of infrastructure development in Singapore. It is done through a three-tiered planning framework, consisting of a long-term plan to plot out Singapore's development over at least 50 years, a Master Plan for the medium term, and short-term plans, the first two of which are prepared by the Urban Redevelopment Authority (URA) and the last by multiple agencies.

While planning in Singapore first began with the Jackson Plan in 1822, which divided up Singapore town into multiple ethnic areas, the colonial authorities in Singapore were not very involved in its development until the 1890s, when they began engaging in back lane schemes and building regulation. Further involvement came with the establishment of the Singapore Improvement Trust (SIT) in 1927, but as the SIT only had limited powers, its initial impact was limited. Detailed urban planning for Singapore eventually started in the 1950s, with the preparation of the 1958 Master Plan using British planning concepts. After Singapore's independence in 1965, planning policies were revised, and the State and City Planning Project was initiated to produce a new plan for Singapore, which became the 1971 Concept Plan. This plan laid out the basic infrastructure for Singapore's development and brought about the integrated planning process used ever since. Planning in Singapore started to incorporate additional priorities from the 1980s, such as quality of life and conservation, while the 1991 revision of the Concept Plan introduced the notion of regional centres to promote decentralisation. To improve the implementation of the Concept Plan's strategies, in the 1990s, Singapore was divided into multiple planning areas, and comprehensive plans for each area's development were produced and compiled into a new plan. From the 2000s, Singapore's urban planners began to incorporate public feedback and opinions into the planning process, while industrial areas became increasingly planned as mixed-use developments.