June Kathleen Lloyd, Baroness Lloyd of Highbury DBE (1 January 1928 – 28 June 2006) was a British paediatrician and, in retirement, a cross bench member of the House of Lords. She was the first female President of the British Paediatric Association (now the Royal College of Paediatrics and Child Health).
Lloyd was born in Gilgit, Kashmir, where her father was a Major in the Royal Indian Army Service Corps. She remained in India until 1936, when her family returned to England. She was educated at the Royal High School in Bath, where she became head girl. She read medicine at the University of Bristol, winning honours with distinction and a gold medal.
She joined the Royal College of Physicians in 1954. After further study in South Shields, Bristol, Plymouth, Oxford, Manchester and Durham, she became research assistant to Otto Wolff in Birmingham. She taught at the University of Birmingham from 1958 to 1965, specialising in metabolic disorders in children, particularly diabetes mellitus and childhood obesity.