James W. Koven (born April 18, 1973 in Morristown, New Jersey) is an American rower.
Koven began rowing as a boarding student at St. Paul's School. He continued rowing as a college student at Brown University where he studied mechanical engineering. Koven became a member of the U.S. Rowing team in 1993 and was a member of the team for eight years, retiring after the Sydney Olympics in 2000. As a national team rower Koven won the World Championships in 1994 in the Men's Heavyweight 8+. In 1996 Koven was in the Men's Heavyweight 8+ that finished fifth. In 1997 Jamie switched from sweep rowing to the single sculls. He trained with Scott Roop, his coach from Brown, and won the World Championships in the Men's Heavyweight 1x in September 1997. In 1998 Koven won the World Cup in Munich and the Diamond Sculls at the Henley Royal Regatta. At the World Championships in Cologne that summer he had an equipment malfunction in the semifinals; he finished 8th in that regatta. Koven continued to row in the single scull through 1999 but moved back to sweep rowing in 2000, competing in the Men's Four at the Sydney Olympics, finishing 5th place. In 2001 Koven competed in the Men's Four that won at the World Cup at Mercer Lake.
Koven retired from rowing after the Olympics in 2000. In the fall of 2010, Koven came out of retirement and began training with the U.S national team in Chula Vista, California.
Koven married Sophie Coquillette on February 20, 1999. They have four children, Lucy Anne(13), Annabel Francis(9), Charlie Coquillette(5) and Henry Crowley(2 months).