Wanderup (Danish: Vanderup) is a municipality in the district of Schleswig-Flensburg, in Schleswig-Holstein, Germany.

On one stretch, the river forms the border with Jerrishøj Municipality and Eggebæk Parish .

Besides Vanderup itself, the municipality includes Birkvang ( Birkwang ), Frøsig( Friesik ), Grønbjerg ( Grünberg ), Julianehøj ( Julianenhöh ), Kellerholm, Kærager or in older Danish Kjærager ( Kieracker ), Kragsted ( Kragstedt ), Sønderby ( Sünneby ), Østerkær ( Osterkjer ) and Vesterkær ( Westerkjer ).

[5] The Birkvang development dates back to a half-farm moved from Vanderup.

The place name thus denotes a field or enclosure (vang) overgrown with birch trees .

Vanderup Church is from the 13th century, built of boulders with a thatched roof without a tower and with a belfry to the west.

The eastern colonist towns partly belonged to Ugle Herred, individual farms in Vanderup under Slevig Domkapital or Flensburg hospital.