Alison Helen Holmes is a British infectious diseases specialist, who is a professor at Imperial College London and the University of Liverpool.

[1] Holmes serves as Director of the National Institute for Health Research (NIHR) Health Protection Research Unit in Healthcare Associated Infections and Antimicrobial Resistance and Consultant at Hammersmith Hospital.

Holmes is on the Executive Committee of the International Society of Infectious Diseases, and she serves on a variety of World Health Organization (WHO) expert groups related to antimicrobial use, Antimicrobial Resistance (AMR), infection prevention and sepsis.

[8] Holmes was elected a Fellow of the Academy of Medical Sciences (FMedSci) in 2017.

[9] She was appointed Officer of the Order of the British Empire (OBE) in the 2021 Birthday Honours for services to medicine and infectious diseases, particularly during Covid-19.