Sir Alan Aird Moncrieff, CBE, FRCP, FRCOG, JP (9 October 1901 – 24 July 1971)[1] was a British paediatrician and professor emeritus at University of London.

Moncrieff was born in East Cliff Manse, St Johns Wood Road, Bournemouth, the eldest surviving son of Rev.

His studies at this time were related to the special problems of neonatal respiratory failure including asphyxia in newborn babies.

[4] After the war, when the Institute of Child Health was founded at the Great Ormond Street Hospital in 1946, Moncrieff was appointed first Nuffield Chair of Child Health[7] at the University of London and Director of the institute, a position he held until 1964, which was based across the hospitals, Queen Elizabeth Hospital for Children, Hackney, the Royal Postgraduate Medical School, Hammersmith, and at Great Ormond Street.

During his long career, Moncrieff worked on several Home Office and Ministry of Health committees.

[5][4] of the World Health Organization As a member of the British Medical Association, he worked for many years on its committees.

He was The Times medical correspondent for a number of years,[2] which helped him financially, as honorary physician on the staff of a teaching hospital there was no salary, and earnings in private pediatric medicine were considered meager.

[3] This increased greatly the number of extra hours that Moncrieff had to work, but enabled him to support his mother.

[3] In 1968, he received a Légion d'honneur in 1958, reflecting on the critical collaboration he conducted in the international coordinated study on growth, with Professor Robert Debré and the Centre Internationale de l’Enfance on Paris.

In 1961 he was awarded the James Spence Gold Medal of Royal College of Paediatrics and Child Health, for developing the first premature-baby unit in 1947.