Keiichiro Nagashima
| full name | Keiichiro Nagashima | |
| nationality | Japan (JPN) | |
| local spelling | 長島 圭一郎 | |
| born | April 1982 | in Ikeda, Hokkaidō (Japan) |
| Navigation | Championships | World Cup |
Championships - Medal table and top 10 positions
| kampioenschap | gold | silver | bronze | 4th-6th | 7th-10th | starts |
 Olympic Games | 0 | 1 | 0 | 1 | 0 | 5 |
| WCh Single Distances | 0 | 0 | 0 | 1 | 1 | 9 |
| WCh Sprint | 0 | 1 | 1 | 1 | 1 | 7 |
Championships - Results
| year | position | championship | place | |
| 2006 | 13 | Olympic Games 2x500 meters | Turin | ITA |
| 32 | Olympic Games 1000 meters | Turin | ITA | |
| 22 | WCh Sprint | Heerenveen | NED | |
| 2007 | 17 | WCh Single Distances 2x500 meters | Salt Lake City | USA |
| 14 | WCh Single Distances 1000 meters | Salt Lake City | USA | |
| 9 | WCh Sprint | Hamar | NOR | |
| 2008 | 6 | WCh Single Distances 2x500 meters | Nagano | JPN |
| 12 | WCh Single Distances 1000 meters | Nagano | JPN | |
| 5 | WCh Sprint | Heerenveen | NED | |
| 2009 | 7 | WCh Single Distances 2x500 meters | Richmond | CAN |
| 19 | WCh Single Distances 1000 meters | Richmond | CAN | |
2  | WCh Sprint | Moscow | RUS | |
| 2010 | 2 | Olympic Games 2x500 meters | Vancouver | CAN |
| 37 | Olympic Games 1000 meters | Vancouver | CAN | |
3  | WCh Sprint | Obihiro | JPN | |
| 2012 | 18 | WCh Single Distances 2x500 meters | Heerenveen | NED |
| 20 | WCh Single Distances 1000 meters | Heerenveen | NED | |
| 2013 | 21 | WCh Sprint | Salt Lake City | USA |
| 2014 | 6 | Olympic Games 2x500 meters | Sochi | RUS |
| 16 | WCh Sprint | Nagano | JPN | |
| 2015 | 24 | WCh Single Distances 2x500 meters | Heerenveen | NED |
