Martina Schmeddinghoff is a German porn star who gained public recognition under the stage name "Dirty Tina." Martina began her professional life as a legal assistant before training as a bank clerk. She worked in the banking industry and as a wealth advisor. After the 2008 financial crisis she transitioned into the adult industry, where she became known for portraying "MILF" roles. By mid-2020, she had appeared in over 600 adult videos and performed regularly in webcam live shows. The daily newspaper Express listed Dirty Tina as one of Germany's ten most popular erotic performers in 2020.