Nerchau is a town and a former municipality in the Leipzig district, in the Free State of Saxony, Germany.

Since 1 January 2011, it is a part (Ortschaft) of the town Grimma.

Nerchau is known for its paint factory which was established by the Hessel brothers in 1834.

After German Reunification the factory was sold a number of times and now belongs to Schoenfeld GmbH (Düsseldorf), which produces artists' paints Lukas since 1862.

In January 2013 Daler-Rowney purchased Lukas and Nerchau, two German brands, with the intention of developing them further in their home country and far further afield.