Kristian Mauritz Mustad (28 February 1848 – 26 December 1913) was a Norwegian politician for the Liberal Party.
He was elected to the Norwegian Parliament in 1883, representing the constituency of Kristians Amt.
He was re-elected in 1886, 1889 and 1892.He worked as an attorney.
His son Sigbjørn Mustad followed in his footsteps, both as a jurist and as a member of Parliament.
Kristian Mauritz Mustad was the son of Ole Hovelsen Mustad and brother of Hans Mustad, and grandson of Hans Hansen Schikkelstad.