Nathan Fillion
Richard Castle - 173 episoder

Stana Katic
Kate Beckett - 173 episoder

Molly C. Quinn
Alexis Castle - 173 episoder

Jon Huertas
Javier Esposito - 173 episoder

Seamus Dever
Kevin Ryan - 173 episoder

Susan Sullivan
Martha Rodgers - 173 episoder

Tamala Jones
Lanie Parish - 173 episoder

Penny Johnson Jerald
Victoria Gates - 93 episoder

Ruben Santiago-Hudson
Roy Montgomery - 59 episoder

Maya Stojan
Tory Ellis - 27 episoder

Toks Olagundoye
Hayley Shipton - 22 episoder

Arye Gross
Sidney Perlmutter - 17 episoder

Sunkrish Bala
Vikram Singh - 9 episoder

Scott Paulin
Jim Beckett - 9 episoder

Juliana Dever
Jenny Duffy-O'Malley - 8 episoder

Myko Olivier
Pi - 7 episoder

Jack Coleman
William Bracken - 6 episoder

Geoff Pierson
Michael Smith - 6 episoder

Michael Dorn
Carter Burke - 6 episoder

L.T. Tolliver
LT - 2 episoder

Michelle Alegria
Reporter - 2 episoder

Michael Trucco
Tom Demming - 4 episoder

Victor Webster
Josh Davidson - 4 episoder

Kristoffer Polaha
Caleb Brown - 4 episoder

Michael Mosley
Jerry Tyson - 4 episoder

Aubrey Plaza
Lucy (voice) (uncredited) - 4 episoder

Judith Scott
Evelyn Montgomery - 3 episoder

Valerie Azlynn
Ann Hastings - 3 episoder

Lisa Edelstein
Rachel McCord - 3 episoder

Phil LaMarr
Dr. Holloway - 3 episoder

Jonathan Adams
Vulcan Simmons - 3 episoder

Dan Castellaneta
Judge Markway - 2 episoder

Ken Baumann
Ashley - 3 episoder

Danny Nucci
Gilbert Mazzara - 2 episoder

Monet Mazur
Gina Cowell - 3 episoder

Sylvester Foster
Precinct Detective - 3 episoder

Annie Wersching
Kelly Nieman - 3 episoder

Matt Letscher
Henry Jenkins - 3 episoder

Jan M. Janssen
Officer Jenkins - 3 episoder

Julia Nickson
Mrs. Lee - 2 episoder