The Scottish Parliament Building (Scottish Gaelic: Pàrlamaid na h-Alba; Scots: Scots Pairlament Biggin) is the home of the Scottish Parliament at Holyrood, within the UNESCO World Heritage Site in central Edinburgh. Construction of the building commenced in June 1999 and the Members of the Scottish Parliament (MSPs) held their first debate in the new building on 7 September 2004. The formal opening by Queen Elizabeth II took place on 9 October 2004. Enric Miralles, the Spanish architect who designed the building, died before its completion.

From 1999 until the opening of the new building in 2004, committee rooms and the debating chamber of the Scottish Parliament were housed in the General Assembly Hall of the Church of Scotland located on The Mound in Edinburgh. Office and administrative accommodation in support of the Parliament were provided in buildings leased from the City of Edinburgh Council. The new Scottish Parliament Building brought together these different elements into one purpose-built parliamentary complex, housing 129 MSPs and more than 1,000 staff and civil servants.

From the outset, the building and its construction have been controversial. The choices of location, architect, design, and construction company were all criticised by politicians, the media and the Scottish public. Scheduled to open in 2001, it did so in 2004, more than three years late with an estimated final cost of £414 million, many times higher than initial estimates of between £10m and £40m. A major public inquiry into the handling of the construction, chaired by the former Lord Advocate, Lord Fraser of Carmyllie, was established in 2003. The inquiry concluded in September 2004 and criticised the management of the whole project from the realisation of cost increases down to the way in which major design changes were implemented. Despite these criticisms and a mixed public reaction, the building was welcomed by architectural academics and critics. The building aimed to achieve a poetic union between the Scottish landscape, its people, its culture, and the city of Edinburgh. The Parliament Building won numerous awards including the 2005 Stirling Prize and has been described by landscape architect Charles Jencks as "a tour de force of arts and crafts and quality without parallel in the last 100 years of British architecture".

Comprising an area of 1.6 ha (4 acres), with a perimeter of 480 m (1570 ft), the Scottish Parliament Building is located 1 km (0.6 mi) east of Edinburgh city centre on the edge of the Old Town. The large site previously housed the headquarters of the Scottish and Newcastle brewery which were demolished to make way for the building. The boundary of the site is marked by the Canongate stretch of the Royal Mile on its northern side, Horse Wynd on its eastern side, where the public entrance to the building is, and Reid's Close on its western side. Reid's Close connects the Canongate and Holyrood Road on the southwestern side of the complex. The south eastern side of the complex is bounded by the Our Dynamic Earth visitor attraction which opened in July 1999, and Queen's Drive which fringes the slopes of Salisbury Crags.

In the immediate vicinity of the building is the Palace of Holyroodhouse, which is bordered by the broad expanse of Holyrood Park. To the south of the parliamentary complex are the steep slopes of Salisbury Crags and Arthur's Seat. The Holyrood and Dumbiedykes areas, to the west of the site, have been extensively redeveloped since 1998, with new retail, hotel and office developments, including Barclay House, the new offices of The Scotsman Publications Ltd.