Sydney Cross began with a Toronto talent agency at the tender age of two; when she was two and a half she had her first job - a small walk-on role in the Dustin Hoffman movie, "Mr. Magorium's Wonder Emporium".

Since then, she has appeared in feature films, made-for-television movies, television series, short films, commercials, and both print and internet advertisements. Sydney has appeared in several student films, allowing her to work with many up-and-coming producers and directors. In 2011 she was invited to the Toronto International Film Festival to attend a screening for "Adventures of Owen", which was chosen by the Toronto Film Critics Association as best short film.