Toirdelbach
- Doctor Who
- List of Irish-language given names
- Tairrdelbach Ua Conchobair
- Tarlach Mac Suibhne
- Tarlach Rua Mac Dónaill
- Tarlach Ó Mealláin
- Toirdelbach Ua Briain
- Toirdelbach mac Murchada meic Briain
- Toirdelbach Ó Conchobair
- Toirdhealbhach mac Ruaidhrí Ó Conchobhair
- Toirdhealbhach Óg Donn Ó Conchobair
- Turlough Luineach O'Neill
- Turlough MacShane O'Neill
- Turlough Ó Carolan
- Turlough, County Mayo
- Vislor Turlough