Audley End House is a largely early 17th-century country house outside Saffron Walden, Essex, England. It is a prodigy house, known as one of the finest Jacobean houses in England.

Audley End is now one-third of its original size, but is still large, with much to enjoy in its architectural features and varied collections. The house shares some similarities with Hatfield House, except that it is stone-clad as opposed to brick. It is currently in the stewardship of English Heritage but long remained the family seat of the Barons Braybrooke, heirs to the estate of whom retain a portion of the contents of the house, the estate, and the right to repurchase as an incorporeal hereditament. Audley End railway station is named after the house.

Audley End was the site of Walden Abbey, a Benedictine monastery that was dissolved and granted to the Lord Chancellor Sir Thomas Audley in 1538 by Henry VIII. The abbey was converted to a domestic house for him with the conversion of the church which had three floors inserted into the nave, the rest of the church itself being demolished. In addition a great hall was constructed on the site of the abbott's lodging, the same position occupied by the later Jacobean great hall.

The house was a key stop during Elizabeth I's Summer Progress of 1578. The progress was to be, like her progresses to Cambridge and Oxford in 1564 and 1566, filled with scholarship, learned debates, and theatrical diversions. Writers and scholars from nearby Cambridge University used the occasion to write papers and speeches. One of these was Gabriel Harvey who by 1578 had been appointed professor of rhetoric at Cambridge. For the Audley End presentations, Harvey had prepared a series of lectures to be delivered to prominent members of the court in attendance with the Queen. Among them was the Edward de Vere, 17th Earl of Oxford.

The house was demolished by Thomas Howard, 1st Earl of Suffolk (Lord Howard de Walden and Lord Treasurer), and a much grander mansion was built, primarily for entertaining James I. He visited the newly built house in January and July 1614. The layout reflects the processional route of the king and queen, each having their own suite of rooms.

It is reputed that Thomas Howard told King James he had spent some £200,000 creating this grand house, and it may be that the king had unwittingly contributed. In 1619, Suffolk and his wife Catherine Howard, Countess of Suffolk were found guilty of embezzlement and sent to the Tower of London but a huge fine secured their release. Suffolk died in disgrace at Audley End in 1626. The design of the house was attributed in later sources to the Earl of Northampton and a master mason Bernard Janssen. The surveyor John Thorpe drew a plan. The Suffolks commissioned tapestries of Hannibal and Scipio from Francis Spiering of Delft, probably for Audley.

James Howard, 3rd Earl of Suffolk inherited a debt of £132,000 from his father and he married to reduce the debt. Susanna Howard was devout and they lived here during the 1640s.

Noted English naval office bureaucrat and diarist Samuel Pepys visited Audley End and described it his diary entry for 8 October 1667. At this time, the house was on the scale of a great royal palace, and became one when Charles II bought it in 1668 for £50,000 for use as a home when attending the races at Newmarket. It was returned to the Suffolks in 1701.

Around 1708, Sir John Vanbrugh was commissioned to work on the site, and parts of the house were gradually demolished until it was reduced to its current size. The main structure has remained little altered since the main front court was demolished in 1708 and the east wing came down in 1753.

Sir John Griffin, fourth Baron Howard de Walden and first Baron Braybrooke, introduced sweeping changes before he died in 1797. In 1762, he commissioned Capability Brown to landscape the parkland, and Robert Adam to design new reception rooms on the house's ground floor in the neoclassical style of the 18th century with a formal grandeur.

Richard Griffin, 3rd Baron Braybrooke, who inherited the house and title in 1825, installed most of the house's huge picture collection, filled the rooms with furnishings, and reinstated something of the original Jacobean feel to the state rooms.

Audley End was offered to the government during the Dunkirk evacuation but the offer was declined due to its lack of facilities. It was requisitioned in March 1941 and used as a camp by a small number of units before being turned over to the Special Operations Executive. The SOE used the house as a general holding camp before using it for its Polish branch. Designated Special Training School 43 (STS 43), it was a base for the Cichociemni. A war memorial to the 108 Poles who died in the service stands in the main drive; the Polish SOE War Memorial, unveiled on 20 June 1983, was Grade II listed in 2018.

After the war, the ninth Lord Braybrooke resumed possession. In 1948 the house was sold to the Ministry of Works, the predecessor of English Heritage.

In 2014, an English Heritage report identified that there is a high risk of flooding at Audley End. It detailed an "extensive threat to the estate affecting a wide zone alongside the River Cam", affecting access, masonry and land surface.

The Capability Brown parkland includes many of the neo-classical monuments, although some are not in the care of English Heritage. The grounds are divided by the River Granta, which is crossed by several ornate bridges one of which features on the back cover of the BBC Gardeners' World Through the Years book, and a main road which follows the route of a Roman road. The Temple of Concord, by John Deval, was added as a romantic folly in 1790.

With help from an 1877 garden plan and William Cresswell's journal from 1874, the walled kitchen garden was restored by Garden Organic in 1999 from an overgrown, semi-derelict state. Completed in 2000, it was opened by Prince Charles and features in a book presented to him on his wedding to Camilla Parker Bowles. It now looks as it would have done in late Victorian times; full of vegetables, fruits, herbs and flowers which have been supplied to the Dorchester Hotel. It now boasts 120 apple, 60 pear and 40 tomato varieties.

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  18th-century print of "Audeley-end Palace" ... "as it was in it's splendor" [sic]
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  Audley End in 1880
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  The garden front
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  view from River Cam
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  Aerial view from the front
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  Aerial rear

The house contains a number of paintings, many still the property of the family of the Barons Braybrooke.

The house and grounds have been used in popular television and radio shows, including Flog It!, Antiques Roadshow and Gardeners' Question Time.

The exteriors and gardens were also used for the 1964 feature film Woman of Straw starring Gina Lollobrigida, Sean Connery and Ralph Richardson.

During 2017, scenes were filmed at Audley End for Trust produced by Danny Boyle and based on the life of John Paul Getty III. On 7 September 2018, scenes were shot for The Crown. Previously, interior shots of the Library and Great Hall had been used to portray rooms in Balmoral Castle, Windsor Castle and Eton College.

Audley End appears in The Victorian Way, a series of videos on English Heritage's YouTube channel. The videos, shot at Audley End, feature the character of Mrs Crocombe (based on Avis Crocombe, head cook at the house during the 1880s) demonstrating Victorian cuisine and other aspects of household management in an English country house in the late 19th century.

• Audley End Railway, miniature railway in the grounds
• Audley End railway station

• Audley End Information at English Heritage
• Friends of Audley End Volunteer group supporting the house
• 'Four centuries of change in a historic country house' on Google Arts & Culture