Jeri Lynn Ryan (born Jeri Lynn Zimmermann; February 22, 1968) is an American actress best known for her role as the Borg Seven of Nine on Star Trek: Voyager, for which she was nominated four times for a Saturn Award and won in 2001.

Who played seven of nine on star trek voyager? Okie... think carefully first, then make a decision:
The relevant information to answer the above question is: Jeri Lynn Ryan (born Jeri Lynn Zimmermann; February 22, 1968) is an American actress best known for her role as the Borg Seven of Nine on Star Trek: Voyager, for which she was nominated four times for a Saturn Award and won in 2001. So, the answer is Jeri Lynn Ryan.