Doctor's Diary is a German-Austrian medical drama that aired for three seasons from 2008 to 2011 on RTL in a coproduction with ORF.

The focus of the series is the young doctor Margarete "Gretchen" Haase, who wants to make a career in a hospital.

It was directed by Bora Dağtekin and shown from 23 June 2008 to 14 February 2011 on German channel RTL.

She returns to Berlin to her parents' house where her father, Professor Franz Haase, makes a suggestion that she applies for an assistant doctor position in surgery at the hospital where he works.

Following up on his suggestion, she meets her old school crush Dr. Marc Meier, who works as the head of surgery at the hospital.