William Alington, 1st Baron Alington of Killard (baptised 14 March 1610/1611, buried 25 October 1648) was an Irish peer, the son of Sir Giles Alington. He was created 1st Baron Alington of Killard, on 28 July 1642.
He married Elizabeth Tollemache, daughter of Sir Lionel Tollemache, 2nd Baronet, before 1 October 1631. They had three children.
| Peerage of Ireland | ||
|---|---|---|
| Preceded by New Creation |
Baron Alington of Killard 1642–1648 |
Succeeded by Giles Alington |