Jeremy Porter Linn (born January 6, 1975) is an American former competition swimmer, Olympic medalist, world record-holder and current swim coach. Linn set an American record in the 100-meter breaststroke while winning the silver medal in that event at the 1996 Summer Olympics in Atlanta, in a time of 1:00.77. With a burst of speed in the final stretch, he finished just .12 seconds behind the gold medal winner from Belgium who had previously set the World Record.

Linn was born in Harrisburg, Pennsylvania on January 6, 1975, and swam his first race at the age of four. In High School, he swam for the Central Dauphin High School Rams, where he became a State Championship winner. A nationally ranked High School swimmer, in the summer he swam for the Devon Crest Swim Club. In 1993, at 18, he set a pool and meet record of 26.22 in the 50 breaststroke in the Mid-Cap Championship Meet for the top six swimmers in each event. At 18, in March, 1993, he set a Meet Record in the Pennsylvania Interscholastic Athletic Association District III Swimming championships in the 100-yard breaststroke of 56.50 seconds, but would improve it to 55.86. The 100-yard breaststroke would remain his signature event.

At the 1996 Olympics in Atlanta, Georgia, Mark Henderson, Gary Hall Jr., Jeff Rouse and Linn set a new world record in the men's 400-metre medley relay, taking a gold medal, and of course, as mentioned earlier, Linn took the silver in the 100-meter breast. Linn was known for his unusual warm-up routine and unorthodox swim sets, and was given the nickname "The Goat" due to his facial hair.

In 1998, Linn took a silver medal at the World Championships in the medley relay.

Linn attended the University of Tennessee from 1995 to 1998, under Head Coach John Trembley, where he was a member of the Tennessee Volunteers swimming and diving team in the National Collegiate Athletic Association (NCAA) and Southeastern Conference (SEC) competition. A psychology major, he was a seventeen-time All-American. He was only the third athlete to win the same event, the 100-yard breaststroke for four consecutive years at the SEC Championships. Linn won eleven SEC swimming titles-six individual and five relay. He was highly instrumental in leading the Tennessee Volunteers to an SEC team championship in Austin in February 1996 where events he won included the 200-yard medley relay in American Record time, the 400-yard medley relay in SEC record time, and the 100-yard breaststroke in pool record time.

At the national level, Linn won four individual NCAA titles. At the March, 1995 Division I NCAA Championships in Indianapolis, he placed second in the 100 breaststroke, not suitable for a title, though he was only .04 seconds behind the first place finisher.

At the 1996 NCAA Championships in March at the University of Texas, as a Sophomore, he helped win the 200 meter Medley Relay in American Record time, and won the 100-yard breaststroke in the third fastest time in American history, 53.02 seconds.

At the March, 1997 NCAA Championships in Minneapolis, he won the 200 breaststroke in a pool record time of 1:55.27, and the 100-yard breaststroke in 52.32 seconds. Linn held the NCAA and U.S. Open record in the 100 yard breaststroke until 2007, until it was broken by Mike Alexandrov of Northwestern University.