Marie Barch (née Knudsen; 1744 – 31 March 1827), was a Danish ballerina.
Barch debuted at the Royal Danish Theatre in Copenhagen at the age of 14 in the 1758-59 season.
The Barch couple made a great success at their debut and became popular with the audience.
In 1761, when Marie Barch was insulted by the theater's first female dancer at the time, the Italian Anna Geringhelli Como (married to the ballet master), her fiancé complained to the ballet master, who had them both fired.
The incident eventually lead to the Como couple losing their place at the theater in 1763.