Some interesting cases are when a character has been called with different full names. For instance Prisoner's second most frequent character, Judy Bryant, has been named both Judith Frances Bryant and Judith May Bryant. The same also happened to characters Barbara Fields, Carol Lewis, Chrissie Latham, Kathy Hall, Len Murphy and Margo Gaffney. Also character Mick O'Brien was mentioned with two different full names, but this was not a mistake by the writers, because it was part of the story that he appeared under a false name. The fact that characters John Barker, Laura Gardiner, Nola McKenzie and Samantha Greenway appeared with different last names also had explanations in the story.
| Character | Full character name | Actor |
| Alison Page | Alison Marie Page | Fay Kelton |
| Andrea Hennessy | Andrea Jane Hennessy | Bethany Lee |
| Anne Griffin | Anne Margaret Griffin | Rowena Wallace |
| Anne Yates | Anne Rosemary Yates | Kirsty Child |
| Audrey Forbes | Audrey May Forbes | Marianne Collopy |
| Barbara Fields | Barbara Jean Fields | Susan Guerin |
| Barbara Fields | Barbara Louise Fields | Susan Guerin |
| Bea Smith | Beatrice Alice Smith | Val Lehman |
| Belinda Johns | Belinda Margaret Johns | Jane Turner |
| Bill Jackson | William James Jackson | Don Barker |
| Bobbie Mitchell | Roberta Alice Mitchell | Maxine Klibingaitis |
| Carol Lewis | Carol Frances Lewis | Elisabeth Crosby |
| Carol Lewis | Caroline Frances Lewis | Elisabeth Crosby |
| Caroline Simpson | Caroline Margaret Simpson | Rosalind Speirs |
| Catherine Roberts | Catherine Angela Roberts | Margo McLennan |
| Chrissie Latham | Christine Angela Latham | Amanda Muggleton |
| Chrissie Latham | Christine Margaret Latham | Amanda Muggleton |
| David O'Connell | David John O'Connell | David Letch |
| Denise Tyler | Denise Frances Tyler | Geraldene Morrow |
| Dinah Walford | Dinah Jane Walford | Trudy Simms |
| Donna Mason | Donna Mary Mason | Arkie Whiteley |
| Doreen Anderson | Doreen May Anderson | Colette Mann |
| Edie Dobson | Edith Anne Dobson | Marion Heathfield |
| Edna Pearson | Edna May Pearson | Vivean Gray |
| Ettie Parslow | Ethel May Parslow | Lois Ramsay |
| Eve Wilder | Eve Marie Wilder | Lynda Stoner |
| Flora Jenkins | Flora May Jenkins | Moira Claux |
| Frank Burke | Francis Joseph Burke | Trevor Kent |
| Franky Doyle | Freda Joan Doyle | Carol Burns |
| Gail Summers | Gail Audrey Summers | Susanne Haworth |
| Geoff Butler | Geoffrey Arthur Butler | Ray Meagher |
| Gerri Doogan | Gerri May Doogan | Deborah Kennedy |
| Gloria Payne | Gloria Jean Payne | Totty Goldsmith |
| Hannah Simpson | Hannah Dale Simpson | Julieanne Newbould |
| Hazel Kent | Hazel Jean Kent | Belinda Davey |
| Helen Smart | Helen Pamela Smart | Caroline Gillmer |
| Jacki Nolan | Jacqueline Mary Nolan | Diane Craig |
| Jackie Donahue | Jacqueline Louise Donahue | Catherine Lynch |
| Janet Dominguez | Janet Rose Dominguez | Deidre Rubenstein |
| Janice Grant | Janice Mary Grant | Jenny Ludlam |
| Jeannie Baxter | Jean Nancy Baxter | Leila Hayes |
| Jenny Armstrong | Jennifer Anne Armstrong | Sally Cooper |
| Jenny Hartley | Jennifer Elise Hartley | Jenny Lovell |
| Jim Fletcher | Matthew James Fletcher | Gerard Maguire |
| John Barker | John Patrick Forbes | Chris Gregory |
| John Fitzwater | John Arthur Fitzwater | Paul Glen |
| Joyce Barry | Joyce Edith Barry | Joy Westmore |
| Joyce Martin | Joyce Diedre Martin | Judy Nunn |
| Judy Bryant | Judith Frances Bryant | Betty Bobbitt |
| Judy Bryant | Judith May Bryant | Betty Bobbitt |
| Karen Travers | Karen Mary Travers | Peita Toppano |
| Kate Peterson | Katherine Elaine Peterson | Olivia Hamnett |
| Kath Maxwell | Katherine Lorraine Maxwell | Kate Hood |
| Kathy Hall | Katherine Louise Hall | Sue Jones |
| Kathy Hall | Kathleen Margaret Hall | Sue Jones |
| Kay White | Kay Frances White | Sandy Gore |
| Kerryn Davies | Kerryn Adele Davies | Jill Forster |
| Kevin Burns | Kevin Arnold Burns | Ian Gilmour |
| Laura Gardiner | Brandy Sherry Carter | Roslyn Gentle |
| Len Murphy | Leonard Arthur Murphy | Maurie Fields |
| Len Murphy | Leonard Edwin Murphy | Maurie Fields |
| Lexie Patterson | Alexis Jane Patterson | Pepe Trevor |
| Linda Golman | Linda Joanne Golman | Mary Charlston |
| Linda Jones | Linda Mary Jones | Elaine Cusick |
| Lisa Mullins | Lisa Marie Mullins | Terrie Waddell |
| Lizzie Birdsworth | Elizabeth Josephine Birdsworth | Sheila Florance |
| Lou Kelly | Louise Jane Kelly | Louise Siversen |
| Margo Gaffney | Margo Jane Gaffney | Jane Clifton |
| Margo Gaffney | Margo Joyce Gaffney | Jane Clifton |
| Melinda Crosse | Melinda Jane Crosse | Lulu Pinkus |
| Mervin Pringle | Mervin John Pringle | Ernie Bourne |
| Meryl King | Meryl Shirley King | Marilyn Maguire |
| Michael Simpson | Michael Edward Simpson | Peter Ford |
| Michelle Parkes | Michelle Janice Parkes | Nina Landis |
| Mick O'Brien | Mark Christopher Brendan | Michael Long |
| Mick O'Brien | Michael Patrick O'Brien | Michael Long |
| Minnie Donovan | Minerva Edith Donovan | Wendy Playfair |
| Mouse | Heather Reylene Trapp | Jentah Sobott |
| Mum Brooks | Jeanette Mary Brooks | Mary Ward |
| Myra Desmond | Myra June Desmond | Anne Phelan |
| Nancy McCormack | Nancy May McCormack | Julia Blake |
| Nick Clarke | Nicholas John Clarke | Ned Manning |
| Nola McKenzie | Jean Mary Carter | Carole Skinner |
| Pamela Simpson | Pamela Janet Simpson | Lorraine West |
| Pat O'Connell | Patricia Mary Theresa O'Connell | Monica Maughan |
| Penny Seymour | Penny Kathleen Seymour | Joy Dunstan |
| Pippa Reynolds | Philippa Ann Reynolds | Christine Harris |
| Pixie Mason | Sandra Louise Mason | Judy McBurney |
| Rachel Milsom | Rachel Louise Milsom | Kim Trengove |
| Reb Kean | Rebecca Anne Kean | Janet Andrewartha |
| Rosemary Kaye | Rosemary Anne Kaye | Jodie Yemm |
| Roslyn Coulson | Roslyn Louise Coulson | Sigrid Thornton |
| Roxanne Bradshaw | Roxanne Valerie Bradshaw | Peppi D'Or |
| Sally Dempster | Sally Anne Dempster | Liz Harris |
| Samantha Greenway | Julie Ann Cameron | Robyn Gibbes |
| Sarah Webster | Sarah Elizabeth Webster | Fiona Paul |
| Sean Jenkins | Sean Albert Jenkins | Steve Millichamp |
| Sharon Gilmour | Sharon Anne Gilmour | Margot Knight |
| Sheila Brady | Sheila Maureen Brady | Colleen Hewett |
| Sonia Stevens | Sonia Elizabeth Stevens | Tina Bursill |
| Steve Ryan | Steven Marcus Ryan | Peter Hayes |
| Tina Gibson | Tina Lee Gibson | Debbie Cumming |
| Tracey Morris | Tracey Anne Morris | Sue Devine |
| Trixie Mann | Patricia Joyce Mann | Anna Mizza |
| Trog | Bernard Edward Mulhare | Jon Williams |
| Wendy Glover | Wendy Louise Glover | Julieanne Newbould |
| Vivienne Williams | Vivienne Anne Williams | Bernadette Gibson |