Denis Browne (1763 – 14 August 1828) was an Irish politician, landowner and High Sheriff who was notorious for his role in punishing rebels in the 1798 rebellion.

Due to his brother's influence and the support of the Irish catholic interest, he was elected MP for County Mayo in 1782, which he would hold till 1800.

[3] On the other hand, Browne and his brother supported the government, keeping the administration in Dublin well informed of events in Mayo in the years prior to the Irish Rebellion of 1798.

In 1795 Browne and his brother Lord Altamount assisted over five hundred Ulster families who fled to Mayo in the wake of disturbances arising from the Battle of the Diamond.

Browne's subsequent support for the Acts of Union 1800 failed to gain him a peerage, though his brother was made first Marquess of Sligo.

Browne was unpopular in Ireland for hanging many Irish rebels and a seeming lack of committee to support Catholic emancipation fully.

A poem was written about him which Douglas Hyde translated from Irish:[5]"If I got your hand, it is I would take it, But not to shake it, O Denis Browne, But to hang you high with a hempen cable, And your feet unable to find the ground, For it's many the boy who was strong and able, You sent in chains with your tyrant frown; But they’ll come again, with the French flag waving,