Adelaide Maud Kellett, CBE, RRC (1 September 1873 – 12 April 1945) was an Australian army nurse and hospital matron.

She served with the Australian Army Nursing Service in the First World War and was matron of Sydney Hospital from 1921 to 1944.

[1] Back in England, Kellett interviewed 128 AANS nurses for the medical history war records of the Australian Imperial Force.

[6] On her return to Australia, Kellett was selected for the role of matron of Sydney Hospital following the death of Rose Creal in 1921,[7] and remained there until her retirement in 1944.

Her funeral was held at St James' Church, Sydney, followed by cremation at the Northern Suburbs Crematorium.