Countryside Partnerships plc, formerly Countryside Properties plc, is a UK housebuilding and urban regeneration company, operating mainly in London and the South East of England, but with a presence in the North West of England. Until 2022, it was listed on the London Stock Exchange and was a constituent of the FTSE 250 Index.

In November 2022, Vistry Group acquired Countryside Partnerships for £1.27 billion.

The housebuilding business that became Countryside Properties was founded in 1958 by Alan Cherry CBE, who remained its chairman until his death in January 2010. His eldest son, Graham Cherry, was appointed to the board in 1984 and was chief executive from 1996; his youngest son Richard Cherry was appointed to the board in 1986 and was appointed deputy chairman in 2005.

Alan Cherry, a chartered surveyor, began his career as an estate agent and was one of the founding partners of Bairstow Eves. In 1959, the four Bairstow partners formed Copthorn as a development business, with Alan Cherry running it part-time. One of the Bairstow clients was another developer, Countryside Properties, formed in 1958 by Solomon 'Bob' Bobroff, and in the late 1960s the two concerns began to work together. In 1972 Countryside acquired Copthorn and, with Bobroff as chairman and Alan Cherry as a joint managing director, Countryside was floated on the London Stock Exchange.

The flotation was closely followed by a recession and in 1975 Countryside passed its final dividend. Bobroff had resigned in 1974, and the subsequent expansion was under the sole direction of Alan Cherry. He emphasised the importance of design and marketing and took the company into a series of very large sites, e.g. Chelmer Village and Chatham Maritime. In 2005, Alan Cherry sought to take the company private. A prominent investor, Paul Kemsley and Joe Lewis's Rock Properties, increased its stake to 28.5%, forcing Cherry to pay more for the company. Countryside was bought out by Copthorn Holdings Ltd, which was then jointly owned by the Cherry family and the Bank of Scotland, part of Lloyds Banking Group.

The company achieved record profits in the following two years, amounting to £27 million on a turnover of £430 million in the year ended September 2007.

However, the Great Recession affected housebuilders acutely, and the company recorded a loss of £22 million on sales of £312 million in the year to September 2008. Under a refinancing deal in October 2009, Lloyds took control of the company.

In 2013, Oaktree Capital Management purchased a majority share in the company, making a further capital injection. The Cherry family retain a minority stake, and Lloyds provided five-year loan facilities. As of October 2014, former Keepmoat chief executive Ian Sutcliffe became the new executive chairman. In 2014 Oaktree acquired luxury home developer Millgate and merged it with Countryside, planning to double the company's size. Following this, the company rebranded as Countryside rather than Countryside Properties, adopting the slogan ‘Places People Love’.