"Lady" served as both a title and a respectful way to address someone. The masculine equivalent, "Lord", was generally used in place of "lady".
Lady Corvax resided on the planet of Mustafar. Although Padmé Amidala held the positions of Queen of Naboo and later senator for her people, she was addressed as "my lady" or "milady." Following the death of her sister, Duchess Satine, during the Clone Wars, Lady Bo-Katan Kryze became the regent of Mandalore. Near the conflict's conclusion, Maul, the Sith Lord who had broken ties with his master and sought to control the criminal world through organizations such as the Shadow Collective and Crimson Dawn, planned to assassinate the Jedi Obi-Wan Kenobi and Anakin Skywalker during the Siege of Mandalore. When Ahsoka Tano, Skywalker's former Padawan, confronted Maul instead, the rogue Sith derisively referred to her as "Lady Tano," mocking her lack of formal rank. Huyang, the ancient Jedi droid, later addressed Ahsoka Tano as "Lady Tano" while assisting her in her search for Grand Admiral Thrawn. The mercenary Baylan Skoll called his employer, the witch Morgan Elsbeth, "Lady Morgan."
During the War of the Bounty Hunters, Lady Domina Tagge was at the helm of the Galactic Empire's ally, Tagge Corporation, while Lady Qi'ra led the Crimson Dawn syndicate. The Lady Luck was the name of Lando Calrissian's yacht.