Tom Selleck
Frank Reagan (22 eps)
Donnie Wahlberg
Danny Reagan (22 eps)
Bridget Moynahan
Erin Reagan-Boyle (22 eps)
Will Estes
Jamie Reagan (22 eps)
Len Cariou
Henry Reagan (22 eps)
Taylor Rose
Danielle Levine (22 eps)
Andrew Terraciano
Sean Reagan (22 eps)
Gregory Jbara
Garrett Moore (22 eps)
Abigail Hawk
Abigail Baker (22 eps)
Louis Cancelmi
Thomas Wilder (3 eps)
Delaney Williams
Bureau Chief Dennis Egan (2 eps)
Miriam A. Hyman
ME Emile Cooper (2 eps)
Jerry DiLeo
Police Officer / Italian Mobster (2 eps)
Sami Gayle
Nicky Reagan-Boyle (1 eps)
Patch Darragh
Joe Kaplan (1 eps)
Quinn VanAntwerp
Robert Rattner (1 eps)
Michael Godere
Starvos Constantine (1 eps)
Liza J. Bennett
Mrs Gibson (1 eps)
Amanda Quaid
Diana Corning (1 eps)
Celina Jade
Marisa Lee (1 eps)
Alex Sgambati
Mindy Gummerman (1 eps)
Tim Barker
Sgt. Mulhearn (1 eps)
Diane Neal
Kelly Blake (1 eps)
Ana Reeder
Louise Kendrick (1 eps)
Benjamin Snyder
Matthew D'Angelo (1 eps)
Martells Audrey
Manifestante (1 eps)
Lynn Marocola
NYPD Police Officer (uncredited) (1 eps)
Erin Cummings
Lori D'Angelo (1 eps)
John Clarence Stewart
Officer Keith Roosevelt (1 eps)
J. Alphonse Nicholson
Schlenger (1 eps)
Meghann Fahy
Lacey Chambers (1 eps)
Chris Richards
Medical Examiner (1 eps)