Shailene Woodley
Hazel Grace Lancaster
Ansel Elgort
Augustus Waters
Laura Dern
Frannie Lancaster
Sam Trammell
Michael Lancaster
Willem Dafoe
Peter van Houten
Lotte Verbeek
Lidewij Vliegenthart
Toni Saladna
Flight Attendant
Bethany Leo
Speaker #1 (Beth)
Alexis Hodges
Speaker #2 (Angel)
Carly Otte
Young Girl (Alisa)
Silvio Wolf Busch
European
Viviana Cardenas
Support Group Member (Julie)
Jordan Drexel
Speaker #3 (Sid)
P.J. Rosotto
Speaker #4 (PJ)
Tanner Boatwright
Gus's Leg Double
Cheyenne Hurley
Coffee Shop Worker
Jennifer Kline
Giggling Girl
Carol Weyers
Anne Frank (voice)
Lauren Blumenthal
Support Group
Nikki Lipinski
Support Group
Sebastian Dean
Support Group
Alexander Murph
Support Group
Taylor Dettore
Support Group
Steven Edmonds
Support Group
John Green
Little Girl's Father (uncredited)