Michel Nielsen Grendahl (12 March 1775 - 18 January 1849) was a Norwegian farmer, shipbuilder and politician.
[1] Grendahl was born at Rennebu in Søndre Trondhjem, Norway.
His parents were Niels Mikkelsen Grindal (1739-1811) and Randi Mikkelsdatter Stavne (1745-1814).
Influenced by the reform teachings of Hans Nielsen Hauge, his farm became a spiritual center for the Haugean Movement (haugianere).
[2][3][4][5] Grendahl was elected to the Norwegian Parliament in 1830, 1833, 1836 and 1842, representing the rural constituency of Søndre Trondhjems Amt (today part of Trøndelag county).