Magnier is a surname. Notable people with the surname include:
Cyrille Magnier (born 1969), French footballer Dave Magnier (1916–1979), Irish Gaelic footballer John Magnier (born 1948), Irish businessman Lise Magnier (born 1984), French politician Paul Magnier (born 2004), French cyclist Philippe Magnier (1647–1715), French sculptor Pierre Magnier (1869–1959), French actor
See also Magnier Peaks, mountains of Antarctica Magnier Peninsula, peninsula of Antarctica