- Who
- Michael Phelps
- What
- 33 total number
- Where
- Not Applicable ()
- When
- 2011
The most medals won at the FINA Swimming World Championships is 33, by Michael Phelps (USA) from 2001 to 2011. Phelps won 26 gold medals, six silvers and a bronze over the course of six championships. In 2007, he won seven gold medals at a single championships, recording five world-record times.