Sean James Spencer
- Bats Left, Throws Left
- Height 5' 11", Weight 185 lb.
- School University of Washington
- High School South Kitsap High School
- Debut May 6, 1999
- Final Game September 28, 2000
- Born May 29, 1975 in Seattle, WA USA
Sean Spencer represented Greece at the 2004 Athens Olympic Games. He pitched 8 2/3 scoreless innings for Greece in the 2003 European Championship and won his only decision as the Greek squad finished a strong second.
In the 1993 World Junior Championship, Spencer was an OF-P for the Silver Medal winners from the US. He hit .342 with 7 runs and 7 RBI while going 1-0 with a 3.00 ERA.