Missing Melbourne woman Katie Dircks has been found alive in Tasmania, police say.

The 30-year playwright and Melbourne Theatre Company employee had been last seen on Friday night leaving work in South Melbourne.

Friends and family had flooded social media with pleas for help to find Ms Dircks over the weekend when she did not arrive home.

In a short statement Monday evening Victorian police said: "Elwood woman Katie Dircks has been located safe and well this afternoon. Investigators would like to thank members of the public and the media for their assistance."