|Gold||1984 Los Angeles||4x400 m relay|
|Silver||1988 Seoul||4x400 m relay|
|Silver||1991 Tokyo||4x400 m relay|
|Bronze||1987 Rome||4x400 m relay|
|World Indoor Championships|
|Gold||1985 Paris||400 m|
|Gold||1991 Seville||400 m|
|Silver||1989 Budapest||400 m|
|Bronze||1991 Seville||4x400 m relay|
She competed for the United States in the 1988 Summer Olympics held in Seoul, South Korea in the 4 x 400 metres where she won the Silver medal with her team mates Denean Howard, Valerie Brisco-Hooks and Florence Griffith Joyner. Second place in that race is still the second fastest time ever run in that event and the current American record. She set her personal record of 49.84 while finishing third in an open semi-final in Seoul. Four years earlier she ran in the qualifying heat for the same relay that eventually took gold.
Dixon was known for her aggressive frontrunning style indoors, where she could take the lead at the break (after the first 50 meters) and hold off her competitors who would have to run around her. In 1981 she won her first of her USA Indoor Track and Field Championships at the (then) Imperial distance of 440 yards. In 1983 she won again and began an unprecedented streak of ten consecutive wins in the 440 or 400 metres.  In 1985, Dixon won the 400 metres at the IAAF World Indoor Championships. She repeated the feat again in 1991, setting the American Record at 50.64 seconds in the event. That record stood until March 13, 2010, when it was broken by Francena McCorory from Hampton University at the NCAA Championships.
Diane Dixon attended the Brooklyn Technical High School and graduated in 1982.
After retiring, Diane worked to help other athletes with career guidance by founding Retired Elite Athletes Need Career Opportunities.
- http://www.iaaf.org/statistics/toplists/inout=o/age=n/season=0/sex=W/all=y/legal=A/disc=4X4/detail.html All Time 4x400 list
- http://www.usatf.org/statistics/champions/USAIndoorTF/women/w400m.asp USA Indoor 400 meters
- "Diane Dixon - Retired Elite Athletes Need Career Opportunities". Retrieved 2 January 2014.