Bellamont House (sometimes Bellamont Forest) is a Georgian Palladian-style house set amongst 1,000 acres (400 hectares) of grounds in Cootehill, County Cavan, Ireland. The house was completed in 1730 for Judge Thomas Coote and likely designed by his nephew, the architect Edward Lovett Pearce.

It is considered to be one of the finest and earliest examples of Palladian architecture in Ireland, and was originally loosely modelled on Andrea Palladio's Villa La Rotonda in Vicenza, Italy.

The name of the house is a reference to the Earl of Bellomont.

The house was constructed for Thomas Coote, whose 3rd wife Anne Lovett Tighe was an aunt of the architect, Edward Lovett Pearce.

It likely passed to his son, Charles Coote (1695–1750) on his death in 1741 and from him to his son Charles Coote, 1st Earl of Bellomont on his death in 1750.

When Richard Coote, 3rd Earl of Bellomont died in 1766, the Bellamont title became extinct; however the title of Baron of Collooney passed to his cousin Charles Coote, 1st Earl of Bellomont, who managed to revive the earldom and became Earl of Bellomont in 1767. The house passed down through the family in 1800 to an illegitimate son of Charles, by the name of Charles Johnston Coote, but the titles became extinct on his death.

Charles Johnston Coote became High Sheriff of Cavan in 1807 and later in 1810 married Louisa, a daughter of Richard Dawson of nearby Dartrey Forest, and he lived until 1842 when the house passed to his eldest son, Dawson Richard Coote (1811–50).

The house was owned and occupied by a minor, Richard Coote, at the time of Griffith's Valuation around 1857 and administered by Colonel Charles George Henry Coote of H.M. Indian Service.