Christian Nielsen

Christian Nielsen may refer to:


 * Christian Nielsen (rower) (born 1988), Danish rower
 * Christian Nielsen (Danish sailor) (1873–1952), Danish sailor
 * Christian Nielsen (Belgian sailor) (born 1932), Belgian sailor
 * Christian Nielsen (footballer) (born 1985), Danish football player
 * Christian Nielsen (football manager) (born 1974), Danish football manager
 * Christian Overgaard Nielsen (1918–1999), Danish zoologist and ecologist
 * Christian Frühstück Nielsen (1878–1956), Danish architect
 * Christian Charles Nielsen (born 1975), American spree killer