Thady is a male given name—either a diminutive of Thaddeus or derived from the Irish Tadhg—it may refer to:
Thady Connellan (1780–1854), Irish school-teacher, poet and historian Thady Coughlan (born 1951), former Limerick City Councillor and former Mayor of Limerick Thady Gosden (born 1995), British racehorse trainer Thady Ryan (1923–2005), Olympic Equestrian chef d'équipe for Ireland during the Summer Olympics of the 1960s Thady Wyndham-Quin, 7th Earl of Dunraven and Mount-Earl (1939–2011), Irish peer
See also Thady Quill, popular traditional Irish song