There have been several uses of the name Sienar.
- , a pilot in the New Republic's Vanguard Squadron.
- , the CEO of Sienar Fleet Systems who designed the TIE fighter.
- The , a shipbuilding noble family.
- , a shipbuilding corporation that built ships for the Galactic Republic during the Clone Wars.
- , the successor to Republic Sienar Systems that built ships for the Galactic Empire.
- , one of the successors of Sienar Fleet Systems formed in order to bypass the Galactic Concordance and supply the First Order with weapons.
- , another of the successors of Sienar Fleet Systems formed in order to bypass the Galactic Concordance and arm the First Order.
The logo of the Sienar family of companies.
- , CEO of Santhe/Sienar Technologies and father of Raith Sienar.
- , a starship designer who helped conceptualize the TIE fighter and the Death Star.
- The , an affluent shipbuilding family toward the end of the Republic and through the era of the Galactic Empire.
- , a historic shipbuilding corporation that built ships for the Galactic Republic during the Great Hyperspace War, the Mandalorian Wars, and the Clone Wars.
- , the shipbuilding arm of Santhe/Sienar Technologies.
- , a large umbrella corporation that owned a number of smaller military manufacturers.
- , a design firm that built the TIE Advanced x1.
- , a TIE testing installation near Curamelle, the capital of Corulag.
- , developed a new engine prior to the Clone Wars.
- , a military manufacturer for the reborn Emperor.
- , Republic Sienar Systems subsidiary that created the Sith Infiltrator.
- , a manufacturer most famous for producing the TIE series.
- , a manufacturer of assassin droids.
- , a civilian subsidiary of Sienar Fleet Systems.
- , the predecessor to Santh/Sienar Technologies