Isabelle Lendl (born July 29, 1991) is an American amateur golfer. She finished second in the 2006 American Junior Golf Association girls standings. She ranked first in the Top Fives and was named a first team Rolex Junior All-American. Her father is Ivan Lendl, a member of the International Tennis Hall of Fame. She speaks two languages - Czech and English.She was the youngest player to qualify for the 2004 U.S. Women's Amateur at the age of 12.