Thomas Andrew Malchow (born January 30, 1977) is an American competition swimmer, Olympic gold medalist, and former world record-holder.
Malchow represented the United States in two consecutive Summer Olympics. At the 1996 Summer Olympics in Atlanta, he received a silver medal for his second-place performance in the men's 200-meter butterfly. Four years later at the 2000 Summer Olympics in Sydney, he won the gold medal in the men's 200-meter butterfly. He also set a new world record in the 200-meter butterfly in 2000.
Malchow was also a captain of the U.S. Men's Swimming Team at the 2004 Summer Olympics. He attended high school in Minnesota at Saint Thomas Academy, graduated from the University of Michigan and was a member of the United States Swimming (USS) Team 'Star'.
- Tom Malchow – Olympic athlete profile at Sports-Reference.com
- 1985: USA (Heath, Biondi, Dillon, Oppel)
- 1987: USA (Dalbey, Biondi, Cetlinski, Oppel)
- 1989: USA (Stewart, Jorgensen, Olsen, Gjertsen)
- 1991: USA (Dalbey, Jorgensen, Hudepohl, Olsen)
- 1993: USA (Burgess, Eckerman, Taner, Davis)
- 1995: AUS (Allen, Housman, Dunn, Kowalski)
- 1997: USA (Carvin, Malchow, Taner, Davis)
- 1999: AUS (Thorpe, Kirby, Hackett, Klim)
- 2002: AUS (Hackett, Stevens, Cram, Thorpe)
- 2006: USA (Phelps, Lochte, Vanderkaay, Keller)
- 2010: USA (Phelps, Vanderkaay, Berens, Lochte)
- 2014: USA (Dwyer, Phelps, Lochte, McLean)