Carl Christopher Georg Andræ (14 October 1812, Hjertebjerg – 2 February 1893) was a Danish politician and mathematician.
From 1842 until 1854, he was professor of mathematics and mechanics at the national military college.
Andræ was elected to the Royal Danish Academy of Sciences and Letters in 1853.
In the next year he became Finance Minister in the Cabinet of Bang before also becoming Council President of Denmark 1856-1857 as leader of the Cabinet of Andræ.
After being replaced as Council President by Carl Christian Hall in 1857 Andræ continued as Finance Minister in the Cabinet of Hall I until 1858.
Being an individualist he, after the defeat of the National Liberals, never formally joined any political group but remained for the rest of his life a sceptical de facto conservative spectator of the Constitutional Struggle.