The 37-year-old Hammon, a six-time WNBA All-Star, holds career averages of 13.1 points, 3.8 assists and 2.5 rebounds over 440 games.
This is her eighth season with the Stars. She has averaged 8.1 points and 4.1 assists this season.
"Becky Hammon has made a lasting mark on the San Antonio Stars and the WNBA," Stars general manager and coach Dan Hughes said. "She has worked tirelessly to become the best she could be on and off the floor. She has inspired in a wonderful way. The beauty of her game has been an amazing thing to have had a front row seat for."
Hammon was acquired from the New York Liberty in a draft-night deal in 2007. She has made the playoffs 12 times in her career.
In league history, Hammon ranks seventh in total points (5,756), second in 3- point field goals made (817), fourth in assists (1,663), sixth in games played (440), and first in free-throw percentage (89.6, min. 300 attempts).