- Harbinger, a Sith dreadnaught during the Great Hyperspace War
- Harbinger, a Hammerhead-class cruiser commandeered by Darth Sion following the Jedi Civil War
- Harbinger, a Separatist tank transport
- Harbinger, a model of courier ship used by the Galactic Empire
- Harbinger, an assault ship piloted by Bel Att during the Galactic Civil War
- Harbinger, a New Republic Mon Calamari Star Cruiser
- Harbinger, an Imperial II-class Star Destroyer used by the Imperial Remnant
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