Adrian Stoop (27 March 1883 – 27 November 1957)[1] was an English rugby union player of Dutch descent.

His association with Harlequins lasted from his debut against Oxford University in November 1901 until 1950 when he ended his 30-year stint as president of the club.

Stoop was born on 27 March 1883 in Cromwell Road, London.

During this time he captained the national side twice, including the first ever international played at Twickenham in 1910.

In addition to Quins and England he also represented Oxford University, Surrey and The Barbarians.