James Walker (born August 18, 1954) is a marathon runner from Guam. He participated in the Athletics at the 1988 Summer Olympics - Men's Marathon, finishing 90th at 2:56:32. His personal best is 2:52:08, from Honolulu 1987.
| Year | Competition | Venue | Position | Notes |
|---|---|---|---|---|
| Representing Guam | ||||
| 1987 | World Championships | Rome, Italy | — | DNF |
| 1988 | Olympic Games | Seoul, South Korea | 90th | 2:56:32 |