Tornesch is a town in the district of Pinneberg, in Schleswig-Holstein, Germany. It is situated approximately 7 km southeast of Elmshorn, and 25 km northwest of Hamburg. Tornesch is also the home of the Klaus-Groth-Schule, named after the German poet Klaus Groth. It is also home to the Fritz-Reuter-Schule, named after German writer Fritz Reuter.