| Clubname: | San Diego Fusion |
| Fullname: | San Diego Fusion |
| Nickname: | Fusion, SD Fusion |
| Founded: | 2004 |
| Managing Director: | Alex Monnar |
| Premier Arena Soccer League Season: | 2007 |
| Position: | 1st, National Champions |
| Pattern La1: | _whiteshoulders |
| Pattern B1: | _thinredsides |
| Pattern Ra1: | _whiteshoulders |
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| Pattern La2: | _shouldersonblack |
| Pattern Ra2: | _shouldersonblack |
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Southern California Fusion were an American soccer team, founded in 2006, which competed in the National Premier Soccer League (NPSL), the fourth tier of the American Soccer Pyramid until 2007 when, despite being the reigning NPSL champions, the franchise chose to leave the league.
In 2007, the team played their home matches at Aviara Park in the city of Carlsbad, California, 35 miles north of downtown San Diego. The team's colors were black, red, white and gold.
The team also fielded an indoor team from 2004 to 2011 in the Premier Arena Soccer League.
| Year | Division | League | Reg. Season | Playoffs | Open Cup | |
|---|---|---|---|---|---|---|
| 2006 | 4 | NPSL | 2nd, Southwest | Did not qualify | Did not qualify | |
| 2007 | 4 | NPSL | 1st, Southwest | Champions | Did not qualify |