Aliyah O’Brien is well-recognized for her acting in Rookie Blue, where she played the role of Holly Stewart. She also appeared in an American show named Bates Motel as a Regina, along with Aliyah was seen in various episodes of series such as Smallville, Supernatural, and Ascension. O’Brien completed a Spectrum Secondary School study, and while studying, she appeared in many musical theater productions. After that, Aliyah went to Camosun College for her further education in kinesiology. Also, she started working as a fitness trainer there. In addition, O’Brien appeared in several films such as Monster Trucks, Preggoland, and Maximum Conviction. In 2013 and 2014, Aliyah O’Brien was also seen in Rookie Blue and continued acting with twelve episodes.