The main cast (elenco) of "How I Met Your Mother" includes:
- Josh Radnor as Ted Mosby
- Jason Segel as Marshall Eriksen
- Cobie Smulders as Robin Scherbatsky
- Neil Patrick Harris as Barney Stinson
- Alyson Hannigan as Lily Aldrin
- Bob Saget as the voice of Future Ted Mosby (narrator)
- Cristin Milioti as Tracy McConnell (the mother, introduced later in the series)
- Lyndsy Fonseca as Penny (Ted's daughter)
- David Henrie as Luke (Ted's son)
These are the principal characters around whom the story revolves, with Ted Mosby telling his children the story of how he met their mother.
