Salah Rais (Arabic: صالح ريس) (c. 1488 – 1568) was the 7th King of Algiers, an Ottoman privateer. He is alternatively referred to as Sala Reis, Salih Rais, Salek Rais and Cale Arraez in several European sources, particularly in Spain, France and Italy.

In 1529, together with Aydın Reis, he took part in the Turkish-Spanish battle near the Isle of Formentera, during which the Ottoman forces destroyed the Spanish fleet, whose commander, Rodrigo de Portuondo [es], died in combat.

In 1538 he commanded the right wing of the Turkish fleet at the naval Battle of Preveza, where the Ottoman forces under Barbarossa Hayreddin Pasha defeated the Holy League of Charles V under the command of Andrea Doria.

In 1551, due to his success in the conquest of Tripoli (Libya) together with Turgut Reis and Sinan Pasha, he was promoted to the rank of Pasha and became the Beylerbeyi (Ottoman equivalent of Grand Duke) of Algiers and the Bahriye Beylerbeyi (Admiral) of the Ottoman West Mediterranean Fleet.

Salah Reis was born in Alexandria in Ottoman Egypt or Kazdağ near Çanakkale and was of Turkish, Egyptian, Arab or Moorish origin.

At a very young age he joined the fleet of Oruç Reis (Aruj Barbarossa), the most famous of the Ottoman corsairs and privateers from Anatolia who sought fortune in the West Mediterranean by operating from their bases on the Barbary Coast. He gained experience in seamanship as a crew member of the Barbarossa brothers, Oruç Reis and Hızır Reis, and soon became one of their chief lieutenants.

Salah Rais was around 30 years old when Oruç Reis died in 1518 during a battle against the Spaniards in Algeria. From 1518 onwards, he joined the fleet of Hızır Reis, who inherited the title of Barbarossa from his older brother, Baba Oruç (Father Aruj).

In 1520 he went to Djerba together with Hızır Reis and Turgut Reis, and later that year assaulted Bône, which was under Spanish control.