Derrynane House, Country house and museum in County Kerry, Ireland

Derrynane House is a 19th-century country residence in County Kerry, now open as a museum and national monument of Ireland. Two floors display original furnishings, family portraits, and personal belongings of the O'Connell family.

Daniel O'Connell's grandparents, Domhnall Mór Ó Conaill and Máire Ní Dhonnchadha Dhuibh, built or extended the house in the 1700s; its oldest part dated from 1702. In 1825 O'Connell added the two-storey south wing facing the sea and the library wing to the east, the oldest surviving section. A chapel modelled on the ruined Derrynane Abbey chapel followed in 1844, and after restoration the house opened as a museum in 1967.

The house is closely tied to Daniel O'Connell, the Irish politician who campaigned for Catholic rights in the 19th century. Walking through the rooms, visitors can see personal objects, furniture, and portraits that give a picture of his daily life and family.

The property sits within a large park with walking trails and direct beach access, so a visit can easily fill several hours. It is worth allowing enough time to see both the inside of the house and the grounds outside.

The chapel Daniel O'Connell added in 1844 was modelled on the ruined monastery chapel of Ahamore Abbey on nearby Abbey Island, so its design echoes a medieval ruin visible across the water. The oldest part of the house, built in 1702, was demolished in 1967 for safety during restoration.