| cast |
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| Series Regulars | |||
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| Alyson Hannigan | Alyson Hannigan as Lily Aldrin | Cobie Smulders | Cobie Smulders as Robin Scherbatsky |
| Jason Segel | Jason Segel as Marshall Eriksen | Josh Radnor | Josh Radnor as Ted Mosby |
| Neil Patrick Harris | Neil Patrick Harris as Barney Stinson | Bob Saget | Bob Saget as Narrator |
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| Recurring & Guests | |||
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| April Bowlby | April Bowlby as Meg | Ashley Williams | Ashley Williams as Victoria |
| Ben Koldyke | Ben Koldyke as Don Frank | Bryan Callen | Bryan Callen as Bilson |
| Chris "Romanski" Romano | Chris "Romanski" Romano as Punchy | Cristine Rose | Cristine Rose as Virginia Mosby |
| David Henrie | David Henrie as Son | Jennifer Morrison | Jennifer Morrison as Zoey Pierson |
| Joe Manganiello | Joe Manganiello as Brad | Joe Nieves | Joe Nieves as Carl |
| Kal Penn | Kal Penn as Kevin | Lyndsy Fonseca | Lyndsy Fonseca as Daughter |
| Nazanin Boniadi | Nazanin Boniadi as Nora | Sarah Chalke | Sarah Chalke as Stella Zinman |
| Tanner Maguire | Tanner Maguire as Young Barney Stinson | Taran Killam | Taran Killam as Blauman |
| Virginia Williams | Virginia Williams as Claudia | | |