The Japrael sector, alternatively called the Onderon sector, constituted a sector located within the Inner Rim area of the galaxy. It encompassed the Japrael system, the home system of the planet Onderon. During the final years of the Galactic Republic, the Onderonian Senator Mina Bonteri represented it in the Galactic Senate, and also in the Separatist Senate throughout the Clone Wars.
The Star Wars Legends novel Darth Bane: Rule of Two, authored by Drew Karpyshyn and released in 2007, initially introduced the Japrael sector. Its status as canon was later solidified through its inclusion in the reference work Ultimate Star Wars.