Kashtan is a surname.
In Russian, the word Kashtan (Каштан) means "chestnut" and it may also refer to: 1P78 Kashtan, Russian military telescopic sight AEK-919K Kashtan, Russian submachine gun CADS-N-1 Kashtan, Russian naval air defence gun-missile system Kashtan-class salvage vessel, class of salvage vessel/submersible support built in East Germany for the Soviet Navy
See also
Kashtanka Kashtanov