|First appearance||"Pilot" (1.01)|
|Last appearance||"The Mole" (4.09)|
|Guest appearances||6.19, 11.21|
Dr. Jon Lloyd is a main character in the Frasier-based fan fiction spin-off Crane Life.
Jon is originally an eager young med student who arrives at the practice on a psychiatry rotation at the start of Season 1. He lives next door to Dr. Niles Crane and Daphne Moon with his girlfriend Dr. Sally Keenan. After a year spent under Niles' mentorship, Jon graduates and becomes a full-fledged psychiatrist. Around the same time, he discovers Sally is pregnant. Late in Season 2, Sally gives birth to their son, Ross Lloyd-Keenan. Mid-way through Season 3, they get married, but their relationship ultimately comes to an end prior to the start of Season 4 when Sally departs Chicago in search of a fresh start. Jon tries to settle down without her but ultimately realises he isn't content at Mead anymore and leaves for another practice mid-way through the season.