Frederick Trench
Frederick Trench may refer to:
- Frederick Trench , Irish MP for Galway County
- Frederick Trench, Irish Member of Parliament
- Frederick Trench, 1st Baron Ashtown, Irish MP for Portarlington and Maryborough
- Frederick Trench, 2nd Baron Ashtown, his nephew, Irish peer
- Frederick Trench, 3rd Baron Ashtown, his grandson, Irish peer
- Frederick Trench , British soldier and Tory politician