Alison Helen Holmes OBE FRCP FMedSci FRCPI is a British infectious diseases specialist, who is a professor at Imperial College London. 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. Her research considers how to mitigate antimicrobial resistance.