2012 FINA World Swimming Championships (25 m) – Men's 400 metre freestyle

The men's 400 metre freestyle event at the 11th FINA World Swimming Championships (25m) took place 14 December 2012 at the Sinan Erdem Dome. In June 2013, Danish swimmer Mads Glæsner was stripped of the bronze medal after testing positive for levomethamphetamine.

2012 FINA World Swimming Championships (25 m) – Men's 400 metre freestyle

The men's 400 metre freestyle event at the 11th FINA World Swimming Championships (25m) took place 14 December 2012 at the Sinan Erdem Dome. In June 2013, Danish swimmer Mads Glæsner was stripped of the bronze medal after testing positive for levomethamphetamine.