Neptun

Neptun may refer to:


 * Neptun (radar), a World War II German radar set
 * Neptun, Romania
 * Neptun Electronics, a retail chain in Albania
 * SK Neptun, Swedish swimming club
 * Neptunkryssare, a class of sailboats
 * R-360 Neptune ("Neptun"), a Ukrainian missile

Ships

 * Neptun (ship, 1693), a warship of the city of Zurich
 * Neptun (ship, 1965), steamboat that operated from 1865 to 1939 on Lake Constance
 * Neptun (ship, 1875), steamship that sank in 1880 in Lake Biel
 * Neptun (ship, 1925), passenger ship
 * Neptun (ship, 1926), combined cable-layer and tanker
 * HSWMS Neptun (1942), a Neptun-class submarine commissioned in 1943 and decommissioned in 1966
 * HSWMS Neptun (1979), a Näcken-class submarine commissioned in 1980 and decommissioned in 1998, now a museum ship