Oliver Plunkett, 1st Baron Louth (d. c. 1555), was an Irish peer.
Plunkett was raised to the Peerage of Ireland as Baron Louth in 1541. He died in circa 1555 and was succeeded in the barony by his son Thomas.
| Peerage of Ireland | ||
|---|---|---|
| Preceded by New Creation |
Baron Louth 1541–c. 1555 |
Succeeded by Thomas Plunkett |