Guest stars
Ashley Tisdale as Logan Rawlings, who publishes a "30 under 30" list for a popular magazine. When she appears to be attracted to Gabi, Elliott sets them up to go on a date in the hope of securing Josh a spot on her list. She heads a media company called Click'd in season 4 and hires Sofia as her assistant.
Kylie Minogue as Shauna, a tech reporter for ABC News with whom Josh has a fling in the episodes of season 2 entitled "Young & Moving" & "Young & Ferris Wheel". Shauna has a seven-year-old son named Brett, and an estranged adult daughter, Danielle, but when Gabi reunites Shauna with Danielle, they realize that Josh has had trysts with both of them.
Keegan Allen as Tyler, a drummer Sofia pressures Gabi to date to deal with working for Josh again. A double date with Josh and woman from Gabi and Sofia's building reveals Tyler is actually homeless.
Cheryl Hines as Kathy Kaminski, Josh's mother who has a drinking problem
Jerry O'Connell as Nick Diamond, Gabi's father who becomes romantically involved with Josh's mother, Kathy, much to the shock of Gabi and Josh
Briana Lane as Dr. Jessica Rounds (season 3), Josh's therapist, who falls for Josh when he helps take her injured dog to the animal hospital
Demi Mills as Keisha (season 4), Elliot and Alan's 13-year-old foster child
Heather Dubrow as Natasha Cook-Campbell, a celebrity chef and lifestyle guru who is one of Gabi's idols
Betty White as Ms. Bernice Wilson, Gabi's downstairs apartment neighbor, who gives her romantic advice. Ms. Wilson reunites with an old lover named Bernie (Carl Reiner) in the episode "Young & Vegas Baby". This was Betty White's final on-camera acting role before her death in 2021.
Andy Buckley as Matt Danon, Josh's estranged father
Jose Moreno Brooks as Juan Carlos (season 5), a guy in Mexico who charms Sofia
Celebrity chef and television personalities have also appeared in the show as themselves including Michael Voltaggio, Rachael Ray, Giada de Laurentiis, and Alex Guarnaschelli.
