Nilani Kahn was a female Trill in the 23rd century. She was joined and became a host of the Kahn symbiont. She was married to Torias Dax. Kahn wanted to study theoretical quantum physics. She later recalled that Torias' eyes always glazed over the moment she brought up this discussion. Nilani married Torias despite concerns about his profession as a pilot. She would often express concerns to Torias about his flights. This character was only mentioned in dialogue. Nilani appears in the short story "Infinity" in The Lives of Dax.