St James Quarter is a large galleria retail shopping centre and residential development in the centre of Edinburgh, Scotland. It is situated in the east end of the New Town.

The site is built on the site of the St. James Centre which closed in October 2016 and the adjoining New St Andrew House office, which was formerly occupied by the Scottish Office.

The retail centre opened on 24 June 2021.

On 17 June 2022, Forth 1 moved into new radio studios within St James Quarter.

On 29 September 2022, HRH Princess Royal officially opened the development.

In October 2025, it was announced that St James Quarter would be rebranded under the Westfield brand in 2026, after Unibail-Rodamco-Westfield (URW) purchased a 25% stake in the shopping centre, they would also take over management duties.

The new shopping centre makes space for 850,000 square feet (79,000 square metres) of retail space, with the neighbouring John Lewis & Partners store being the shopping centre's anchor. The retail centre has a capacity of 80 units, alongside an Everyman Cinema and the food hall Bonnie & Wild. The W Hotel and Roomzzz Aparthotel opened in 2023.

A selection of stores in the centre include H Beauty, Zara, Coach, New Balance, Lego, Next, Cos & H&M.