St Brigid's will face Corofin in the Connacht Senior Football Championship Final.
Jerome Stack's men have beaten Mohill by two points.
In a tight encounter, Mohill were 0-4 0-3 up at the break with a strong breeze.
Brigid's got themselves back in front with an important goal from Ciaran Sugrue.
Eamonn O'Hara's Mohill fought hard with late points but couldn't get that goal chance off to win the game.
Full time score from Dr Hyde Park:
St Brigid's 1-7 Mohill 0-8