Bradley Klahn (born August 20, 1990) is an American professional tennis player from Poway, California.
Klahn played collegiate tennis at Stanford University, where he won the 2010 NCAA Singles Championships as a sophomore. His next year as a junior, he was a finalist in the NCAA Doubles Championship. He played at the 2010 US Open, taking a set from 20th seed Sam Querrey before being defeated in four sets. Klahn received a wild card into the 2011 SAP Open. He is coached by Lee Merry and Stanford Boster. He underwent back surgery in February 2015 and did not resume playing until late 2016, accepting a wild card into qualifying for the Challenger event in Champaign-Urbana and winning three matches to reach the main draw, where he defeated Sam Groth in the first round and Tennys Sandgren in the second before falling to Jared Donaldson in the quarterfinals.
Began playing tennis at age 11 after his mother, Nancy, who played tennis at University of Iowa, signed him up for a summer round-robin league; Father, Dennis, is a group controller; younger sister, Kathryn, younger brother, Brian, are both students at Santa Clara University (freshman and senior, respectively). He grew up in Poway, California, 30 minutes northeast of San Diego and admired countrymen Pete Sampras, Andre Agassi and Andy Roddick.