Bea Smith (Danielle Cormack) (seasons 1–4) came to be an inmate after attempting to murder her husband, Harry, after she had endured years of domestic violence.
Franky was sent to Wentworth after she was charged with assault for throwing boiling oil on a television presenter of a cooking show that she was participating on for criticizing her food.
In the season 4 premiere, Vera is appointed the new Prison Governor of Wentworth after Joan is charged with the murder of former inmate Jess Warner and is remanded in custody awaiting sentencing.
He attempts to have a relationship with fellow corrections officer Vera Bennett, but it ends after she reads a journal filled with expressions of rage as part of his therapy.
Sue "Boomer" Jenkins (Katrina Milosevic) (seasons 1–8) is an inmate at Wentworth who is serving time for grievous bodily harm and drug trafficking.
In season 6 she falls in love with Ruby Mitchell, but also begins to doubt Kaz after her former lover, Marie Winter, is arrested and incarcerated at Wentworth.
Sonia Stevens (Sigrid Thornton) (seasons 4–6) made her first appearance during the fourth series episode "Divide and Conquer", broadcast on 14 June 2016.
Judy Bryant (Vivienne Awosoga) (season 8) is a hacker who is suspected of terrorism, and is despised by Ann Reynolds, the new general manager, for this, as her daughter died in a terrorist attack.
She attempts to save money by shutting down the protection unit, enlisting Lou Kelly to take care of the prisoners there, and manipulates Vera into supporting her by revealing her daughter was killed in a terrorist attack.
Simmo was a recovering heroin addict, until her husband ordered her to kill Bea Smith at the request of Vinnie Holt to avenge the murder of his wife, Jacs.
Sean Brody (Rick Donald) (season 7) was a former officer of Walford Prison who shared a sexual relationship with guard Jake Stewart.
Brody takes the prison hostage in order to get Marie Winter out but his plan fails and he is shot and killed by Allie Novak.
Kaiya Goodes (Tanika Fry) (season 1) is Toni's daughter, who lives in the prison with her, though Doreen takes care of her to the point where others see her as her real mother.
After Bea loses track of her in a riot and Toni is put in solitary for using drugs, Doreen sends Kaiya out of Wentworth to live with her grandmother.
Celeste Donaldson (Anne Charleston) (season 1) is Liz's mother-in-law, who she accidentally killed by running over with a tractor after drinking alcohol having struggled to plan her birthday party.
Mike Pennisi (Paul McDermott, Felix Williamson) (seasons 1, 5) is a former chef who was severely burned by Franky after insulting her food, which sent her to Wentworth.
Franky initially suspects Ferguson, but realizes later it wasn't, eventually discovering the real killer was new inmate Iman Farah, who was his girlfriend.
Malcolm Spitz (John Brumpton) (season 2) is Simmo Slater's husband and their daughter's father, who works as the driver for Vinnie Holt.
Colin Bates (Steve Le Marquand) (season 2) ruthless rapist serving time in Walford Prison, who ends up being stabbed in the crotch by Franky after he refused to honour their drug deal.
Darren (Tom Budge) (season 4) often called Daz, is Boomer's ex-boyfriend, now dating her sister, he comes to see her in conjugal after she tempts him, but after he realizes she is trying to get pregnant, he leaves.
After a paranoid Doreen nearly gets him beaten by the Red Right Hand, she kicks him out, forcing him to find other accommodations too far away to bring Josh for regular visits.
Imogen Fessler (Rachael Maza) (seasons 4–5) is Franky's boss at the legal clinic she works at following her release from Wentworth.
Shayne Butler (Hunter Page-Lochard) (seasons 4-5) is the son of Jianna Riley, Ferguson's lover, and a foster child after being taken out of Blackmoor prison as a baby by Will.
Anton (Meyne Wyatt) (season 7) is an associate of Sean Brody who disguises himself as a guard to help him break Marie Winter out.
Wes Condi (David Serafin) (season 7) is an associate of Sean Brody who disguises himself as a guard to help him break Marie Winter out.
Rachel Marsh (Nicki Wendt) (season 7) is a SWAT team leader who is brought to deal with the siege caused by Sean Brody.
Vince Spencer (Steve Nation) (season 7) is a male prostitute who is brought in by Sean Brody and Linda Miles to give Liz one last time before her dementia gets too bad.
Dale Langdon (Gary Sweet) (season 8) is an NSO agent who takes over the investigation into Judy Bryant following the revelation that the evidence against her was planted.
Joe Hoxton (Dion Mills) (season 8) is a homeless man who was a friend of Kath Maxwell, whose identity Joan Ferguson stole after killing her.
Emile Frazer (Dave Lawson) (season 8) is an associate of Judy Bryant, who is instructed to bring a bomb to Wentworth to allow her and Lou to break out.