All 53 actors in both L.A. Law and Who's the Boss?
53 actors have appeared in both L.A. Law and Who's the Boss?, across 367 episodes. The most-credited is Conchata Ferrell, Susan Bloom, Lorna Landsberg in L.A. Law and Frances in Who's the Boss?.
| Actor | In L.A. Law | In Who's the Boss? | Eps | Eps |
|---|---|---|---|---|
| Conchata Ferrell | Susan Bloom, Lorna Landsberg | Frances | 11 | 1 |
| John Hancock | Judge Richard Armand | Dr. Jack Emerson | 11 | 1 |
| Earl Boen | Judge Walter L. Swanson | Jim Peterson | 8 | 3 |
| Kate Vernon | Belinda Fox | Kathleen Sawyer | 4 | 4 |
| Jerry Hardin | D.A. Malcolm Gold | Dr. Graham | 6 | 3 |
| Robert Costanzo | Vinnie LaRosa | Robaire | 3 | 1 |
| Jonathan Brandis | Kevin Talbot | Paul | 2 | 1 |
| Terence McNally | Dean Ackerson, Dr. Paul Wooden | Brad | 2 | 1 |
| Larry Cedar | Robert Wilentz | Bradley Guylas | 1 | 1 |
| Phil Donahue | Phil Donahue | Phil Donahue | 1 | 1 |
| Ray Buktenica | Larry Mullen | Hank Sloan | 1 | 1 |
| Vic Polizos | Al Vogel | Joe Thomopolous | 1 | 3 |
| Candice Azzara | Aurora | Fran Thomopolous | 2 | 3 |
| Dakin Matthews | Marshall Hygate | Judge | 4 | 1 |
| Scott Bryce | James Pavlik | Steve Barton | 4 | 1 |
| Armin Shimerman | Ernie Frye, Timothy Wiseboro | Mr. Warner | 2 | 1 |
| Jim Jansen | Geoffrey Bowers, Jerry Manoogian | Dr. Doyle Ferguson | 2 | 1 |
| Charles Frank | Jimmy Markham | Clifford | 3 | 1 |
| Alan Blumenfeld | Dr. Robert Ingram, Ed Hicks | The Man | 2 | 1 |
| Anne Gee Byrd | Dr. Marion Maitland | Nurse | 1 | 1 |
| Christine Healy | Maureen Stanton | Jane | 1 | 1 |
| Lawrence Mandley | Clerk | William | 1 | 1 |
| Lee Garlington | Regina Furnald | Ms. Foster | 1 | 1 |
| Paul Sand | Headmaster Ted Waldron | Wally | 1 | 1 |
| Frances Bay | Marian McConnell | Candy | 1 | 2 |
| Bibi Besch | Corrinne Dupree | Hilary | 1 | 1 |
| Brandon Maggart | Attorney Arthur Curry | Coach | 1 | 1 |
| George O. Petrie | Dwight Kroft | Antonio Romano | 1 | 1 |
| Ian Abercrombie | Gunther Hall | Leo | 1 | 1 |
| Patrick Waddell | Foreman | Guest #1 | 1 | 1 |
| Ken Lerner | Attorney Peter Duble | Leonard Marshall | 2 | 1 |
| Pat Millicano | Dennis Smith | Ned | 1 | 2 |
| Alfred Dennis | Israel Hersch | Attendant | 1 | 1 |
| Ben Cooper | J. Howard Tucker | The Manager | 1 | 1 |
| D. David Morin | Lyle Felton | Father #1 | 1 | 1 |
| John Rensenhouse | Captain Sam Danowitz | Airline Official | 1 | 1 |
| Mary Tanner Bailey | Kelly | Beth | 1 | 1 |
| Mary Pat Gleason | Edna Girth | Diane | 1 | 1 |
| Michael Goodwin | Stan Venturelli | Harry Dolan | 1 | 1 |
| Todd Jeffries | City Attorney Larry Martin | Minister | 1 | 1 |
| William Utay | George Whelan | Jim | 1 | 1 |
| John Hostetter | William Forrester | Satch | 1 | 1 |
| Michael Keys Hall | Tom Calvin | Mike McCann | 1 | 1 |
| Mitchell Ryan | Duncan Young | Jack Sawyer | 1 | 1 |
| Richard Minchenberg | Defense Attorney Edward Mann | Waiter | 1 | 1 |
| Barry Kivel | Pete Caffney | Jake | 1 | 1 |
| Dave Florek | Policeman | Chris | 1 | 1 |
| Dean Hill | Belligerent Man | Leonard Tibbs | 1 | 1 |
| Mik Scriba | Guard Bob | Chauffeur | 1 | 1 |
| Helen Duffy | Jury Foreperson | Chairwoman | 1 | 1 |
| Marji Martin | Mildred Greevy | Marge | 1 | 1 |
| Ray Reinhardt | David Braeder | Herb | 1 | 1 |
| Walter Spear | Rally Guest | Party Guest | 1 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.