The Jackson Plan or Raffles Town Plan,, an urban plan of 1822 titled "Plan of the Town of Singapore", is a proposed scheme for Singapore drawn up to maintain some order in the urban development of the fledgling but thriving colony founded just three years earlier. It was named after Lieutenant Philip Jackson, the colony's engineer and land surveyor tasked to oversee its physical development in accordance with the vision of Stamford Raffles for Singapore, hence it is also commonly called Raffles Town Plan. The plan was formulated in late 1822 and published in 1828. It is the earliest extant plan for the town of Singapore, but not an actual street map of Singapore as it existed in 1822 or 1828 since the plan is an idealised scheme of how Singapore may be organised that was not fully realised. Nevertheless it served as a guide for the development of Singapore in its early days, and the effect of the general layout of the plan is still observable to this day.
The plan is currently on display in the Singapore History Gallery at the National Museum of Singapore.
Sir Stamford Raffles founded the colony in 1819, and before he left Singapore, he wrote to William Farquhar giving instructions on how the colony may be organised. Farquhar governed Singapore from 1819 until 1823, and with limited funds, he chose a pragmatic approach to allow the colony to flourish. However, under the sheer volume of trade that passed through her port, some instructions were disregarded and the town grew haphazardly. Upon his final return to colony in October 1822, Raffles was displeased by the disorderliness of the town and that Farquhar had not followed closely the instructions he gave. For example, Farquhar allowed merchants to encroach on designated government area – he permitted the erection of houses and godowns on the Padang and on the nearby banks of the Singapore River, within an area Raffles specified not to be permanently appropriated by individuals. In response, Raffles formed a Town Committee, consisting of a merchant, A. L. Johnston; a civil servant George Bonham; and Captain Charles Edward Davis of the Bengal Native Infantry, who acted as president of the committee. They were assisted by Lieutenant Jackson who drew up the layout plan of the city according to Raffles' instructions.