Alexander Grinager (January 26, 1865–March 8, 1949) was an American artist most noted for his murals and scenic painting.
Alexander Grinager was born in Albert Lea, Minnesota, the son of Mons and Anna Egge Grinager. His parents had immigrated from the district of Hadeland, Norway. His father was from South Grinager in Tingelstad Parish, his mother from Brandbu, both in Gran municipality in Oppland. Grinager studied in Philadelphia, PA, before going abroad in 1887. From 1887-1891, Grinager was a pupil at the Royal Academy in Copenhagen, Denmark where he studied with Carl Bloch. He also studied in Paris at the Académie Julian and while in France was particularly influenced by the works of Manet and Monet.
In 1896, he moved to Westchester County, New York, remaining there for the remainder of his life. He made his living principally as an easel painter, stage designer, and muralist. In New York he designed and carried out the scenic effects for many productions by Impresario David Belasco. His mural paintings included The Streets of Baghdad which covered one floor of the Grand Central Station. His paintings were frequently exhibited at the Salmagundi Club in New York City between 1908 and 1946.