Lilia Osterloh (born April 7, 1978) is a former tennis player from the United States.

[1] She reached her highest singles ranking in April 2001, when she became world No.

Her career-high doubles ranking is world No.

In 2013, Osterloh graduated from Stanford University with a degree in International Relations.

[2] While at Stanford, she won the Honda Sports Award as the nation's best female tennis player in 1997.