Lydiard may refer to:
Places in England
- Lydiard Millicent, a Wiltshire village and parish, near the Borough of Swindon
- Lydiard Tregoze, a Wiltshire village and parish, near the Borough of Swindon
- Lydiard Park, formerly in the parish, now in the Borough of Swindon
- Lydiard House
Surname
- Arthur Lydiard (1917–2004), New Zealand runner and athletics coach
- Charles Lydiard (d. 1807), Royal Navy officer
- Livingston A. Lydiard (1867–1954), American politician
Christian name
- Lydiard H. Horton (1879––1945), psychologist and author
Other uses
- HMS Lydiard (1914), a destroyer of the Royal Navy
See also
- Liddiard, surname