Julie Martin (also Robinson) is a fictional character from the Australian soap opera Neighbours. Originally played by Vikki Blanche, she made her first screen appearance during the show's first episode broadcast on 18 March 1985. The character departed in the same year. When she returned in 1992, Julie Mullins took over the role. Julie married Philip Martin and became his children's stepmother. Julie and Philip also had a daughter, Hannah. Julie's storylines have included struggling to befriend her stepson, her crumbling marriage and the discovery that she is a product of rape. Julie was portrayed as a busybody and gossip.

Julie is one of the twelve original regular characters conceived by the creator and then executive producer of Neighbours, Reg Watson. Casting director Jan Russ was tasked with finding the actors to play the original cast, with the majority chosen for their comedic skills. Vikki Blanche was cast as Julie when she was 18. She had graduated from the National Theatre drama school in November 1984 and was cast the following month. Blanche did not think she would win the role so soon after leaving school, so she "clowned around" at the audition. She stated "I always thought I would have to work my way up in this industry, so I didn't really take the audition very seriously. I had an idea for a character floating around in the back of my head, so I decided to combine it with what I'd been told about Julie – and went completely over the top!" Blanche began filming for the serial at the HSV-7 studios in Melbourne on 2 January 1985. She admitted that accepting the breakthrough role of Julie meant "a lot of thinking and decision-making" beforehand. She explained "People assume you just jump at a chance like that, but in a way it's a worry. I felt I was being thrown in at the deep end. I wasn't that thrilled at first. I've seen so many go into series, then I never saw them again." However, she expressed her hope that the role would be long-term, as she enjoyed her character and working with the show's cast and crew. Blanche also said that due to her workload, she had lost touch with her drama school friends and her social life was non-existent outside of those she worked with. She added "After playing a character all the week I just want to stop and catch up with myself at weekends." Blanche made her debut appearance in the show's first episode, broadcast on 18 March 1985.

After seven months in the role, Blanche decided to leave Neighbours, becoming the second regular cast member to do so. James Oram, author of Neighbours Behind the Scenes, noted that Blanche wanted more than the show could offer and she did not want to be typecast. Blanche also explained that when the serial began, she knew that she did not want to stay for the full twelve months of her contract. She continued: "I learnt a lot from Neighbours but it also retards your development staying in the same role for so long. I want to make sure I experience as much as possible so I know what I want."

In 1992, Neighbours underwent a major overhaul and it took on "a darker, more adult tone". Script editor Barbara Angell explained that they wanted to appeal to a much wider audience and show that suburbia in Australia was "interesting and diverse". Several new characters were introduced, while others were written out, including Todd Landers (Kristian Schmid) whose death led to the reintroduction of Julie, now played by Julie Mullins, and her family. Mullins was planning to base herself in London when she learned she had been cast as Julie. Mullins was in her twenties at the time of her casting, and as the character was meant to be in her mid-30s, the actress was aged using conservative clothes and a short, curled hairstyle.

Julie, as played by Mullins, is described as obnoxious and unable to keep her nose out of other people's business. She has a "brusque and pompous manner", which annoys those around her. As a mother Julie is embarrassing, humiliating her children with her antics. Her persona means she finds it hard to hold a job because she is never suited to anything she tries. She firewalls herself with these traits, as she genuinely has a good heart but refuses to show it, and consequently is disliked by almost everyone she encounters.

After two years of playing Julie, Mullins decided to leave Neighbours in 1994. The producers wanted the character to have an exciting storyline, so they decided to kill her off. Mullins said "It was time for me to move on and I'd never have escaped the image of grumpy old Julie unless she actually died." During a murder mystery weekend, which was attended by many Erinsborough residents, Julie's body was found at the bottom of a staircase. Mullins explained that originally Julie was going to commit suicide, but the writers changed the storyline a couple of days before filming without telling her. Mullins told Inside Soap's Victoria Ross that this meant in the lead up to Julie's death, she played her "like a desperate woman on the verge of suicide!" Philip was initially suspected of killing his wife after the other guests witnessed him having an argument with Julie before she died.

During Mullin's time on the show, she enjoyed her arguments with Cheryl Stark and felt very close to her on-screen family. She hated the racist storylines involving the Lim's eating her dog, a storyline she fought hard against filming.

Mullins was set to return for the spin-off series Neighbours vs Zombies, however, scheduling conflicts denied her of the opportunity. A few years later she managed to return for Neighbours vs Time Travel, a project she thoroughly enjoyed.