Michael Peter Desmond O'Donoghue MStJ FSA (born 1971) is a British officer of arms who currently serves as York Herald of Arms in Ordinary at the College of Arms in London. He was appointed to the office on 31 May 2012, having served as Bluemantle Pursuivant from 2005.

The son of Michael John O'Donoghue (1934–2016), a lecturer in gemmology at the London Metropolitan University and an author of books on the subject, formerly a curator at the British Museum and the National Library of Scotland,^[1] and Elizabeth Anne Hawkins (née Borley),^[2] O'Donoghue was educated at Gonville and Caius College, Cambridge (M.A. 1991)^[3] where he was president of the Cambridge University Heraldic and Genealogical Society. For several years he was a genealogist and researcher, including time spent as research assistant to two Windsor Heralds—the late Theobald Mathew and William Hunt.

With Clive Cheesman (Richmond Herald), O'Donoghue was the co-editor of The Coat of Arms, the journal of the Heraldry Society. The two heralds took over that position in 2005 from the late John Brooke-Little, former Clarenceux King of Arms.^[4] He was elected a Fellow of the Society of Antiquaries in 2015.^[5] In September 2024, O'Donoghue was made a Member of the Most Venerable Order of St John.^[6]

In 2002, O'Donoghue married Catherine Ann Wolfe.^[7]

• 2024: Member of the Most Venerable Order of St John of Jerusalem^[8]
• 2012: Queen Elizabeth II Diamond Jubilee Medal
• 2022: Queen Elizabeth II Platinum Jubilee Medal
• 2023: King Charles III Coronation Medal

• Heraldry
• Pursuivant

Heraldic offices
Preceded by Robert Noel	Bluemantle Pursuivant 2005 – 2012	Succeeded by Mark Scott
Preceded by Sir Henry Paston-Bedingfeld	York Herald 2012 – present	Incumbent
Preceded by David White	Registrar of the College of Arms 2021–present	Incumbent