Martha Kate Morgan has three older brothers and lives in Sydney, Australia. She been performing from a young age. She started taking ballet lessons when she was just three years old. It was Martha Kate's youngest brother, fellow actor Ned Morgan, known for Sleepwalking (2018) who got Martha into acting. Before even commencing kindergarten, Martha Kate tagged along to drama classes with him from the age of five, after he announced that he wanted to be an actor. At first this was just for fun, however two years later they both found professional representation.

Martha Kate was quickly asked to audition for the Australian Federal government 'Respect' domestic violence television commercial. It was her very first audition and the role was a minor one, however she received a callback and was then given the lead role. This TVC was so successful that it ran for the next two years across the country. Pretty impressive for a first audition.

Her second ever audition was for Causeway Film's successful short film, Grace (2018) and she won that role too. The film, staring Eliza Scanlen has been very successful at film festivals, screening at Cambridge, Flickerfest and on opening night at the St Kilda Film Festival in 2018.

Martha has gone on to appear on stage in Sydney's Belvoir Theatre's production of 'Girl Asleep' playing Little Greta, which she says has been her favorite experience so far. To date, Martha has shot a total of 7 short films, as well as 5 television commercials. At the end of 2019, Martha and her brother, Ned traveled to the US to study under various acting coaches in Los Angeles with American Arts Film & Television Academy, LLC, run by Jessica Orcsik . Martha Kate is a top 10 finalist in the running to win the Carmen Duncan Scholarship, in honor of Jessica's aunt, the late Carmen Duncan

In her spare time, Martha Kate enjoys horse riding, swimming, singing, playing with her pets and hanging out with her brothers.