The Sussex Stakes is a Group 1 flat horse race in Great Britain open to horses aged three years or older. It is run at Goodwood over a distance of 1 mile, and it is scheduled to take place each year in late July or early August.

Goodwood Racecourse is a horse-racing track five miles north of Chichester, West Sussex, in England controlled by the family of the Duke of Richmond, whose seat is nearby Goodwood House. It hosts the annual Glorious Goodwood meeting in late July and early August, which is one of the highlights of the British flat racing calendar, and is home to three of the UK's 36 annual Group 1 flat races, the Sussex Stakes, the Goodwood Cup and the Nassau Stakes. Although the race meeting has become known as 'Glorious Goodwood', it is sponsored by Qatar and officially called the 'Qatar Goodwood Festival'.