| Competition: | National Premier Soccer League |
| Season: | 2015 |
| Winners: | New York Cosmos B |
| Biggest Home Win: | NYC 9–0 RIR (July 5) |
| Biggest Away Win: | TEM 1–8 SDF (June 7) |
| Highest Scoring: | TUL 10–2 LIV (June 27) |
| Matches: | 391 |
| Total Goals: | 1442 |
| Highest Attendance: | 18,227 CHA 2-3 NYC (August 8 - NPSL record) (NPSL Championship Game) |
| Prevseason: | 2014 |
| Nextseason: | 2016 |
The 2015 National Premier Soccer League season was the 103rd season of FIFA-sanctioned soccer in the United States, and the 13th season of the NPSL. Sixty eight clubs competed in the semi-professional soccer leagues.
| Team | Location | Region/Conference | Notes | |
|---|---|---|---|---|
| Deportivo Coras USA | Riverside, California | West - Southwest | Expansion | |
| FC Frederick | Frederick, Maryland | Northeast - Mid-Atlantic | Expansion | |
| FC Indiana Lions | Lafayette, Indiana | Midwest | Returning team | |
| FC Tacoma 253[1] | Tacoma, Washington | West - Northwest | Expansion | |
| FC Wichita | Wichita, Kansas | South - South Central | Expansion | |
| Fredericksburg FC | Fredericksburg, Virginia | Northeast - Mid-Atlantic | Rebrand of RVA FC[2] | |
| Houston Regals | Houston, Texas | South - South Central | Returning team | |
| Kraze United | Lake Mary, Florida | South - Sunshine | Expansion | |
| Jersey Blues FC[3] | Morris Plains, New Jersey | Northeast - Keystone | Returning team, Rebrand from Morris County Colonials | |
| New York Cosmos B[4] | New York, New York | Northeast - North Atlantic | Expansion | |
| Weston FC | Weston, Florida | South - Sunshine | Expansion | |
| Miami Fusion FC[5] | Miami, Florida | South - Sunshine | Expansion |
| Team | Reason |
|---|---|
| BCS Clash | Temporary withdraw |
| Bordo FC St. Louis | Folded |
| Cape Coral Hurricanes | Joined CSL USA |
| D.C. United U-23 | Joined USL-PDL |
| Del Rey City SC | Joined United Premier Soccer League |
| Eau Claire Aris FC | On hiatus; plans to move to Milwaukee |
| FC Santa Clarita | Joined United Premier Soccer League |
| Federal City FC | Temporary withdraw |
| Gate City FC | Folded |
| Gorge FC | Folded |
| Inter United FC | Folded |
| Junior Lone Star FC | Temporary withdraw |
| Lehigh Valley United Sonic | Joined USL-PDL |
| New York Red Bulls U-23 | Joined USL-PDL |
| Oklahoma City FC | Withdrew; planned to join NASL[6] |
| Pensacola FC | Withdrew during 2014 season |
| Pocono Snow | On hiatus |
| Quad City Eagles FC | Temporary withdraw |
| Rocket City United | Temporary withdraw |
| Seattle Sporting FC | Withdrew; joined PASL |
| Tampa Marauders | Joined CSL USA |
Bold = winner
* = after extra time, = penalty shootout score----
Note: Teams in national semifinal were reseeded and paired based on those seeds (1 vs. 4, 2 vs. 3).
Bold = winner
* = after extra time, = penalty shootout score
| 1st Team All NPSL[8] | |||
|---|---|---|---|
| Position | Player | Club | |
| DF | John Neeskens | New York Cosmos B | |
| DF | Sean Rutter | Chattanooga FC | |
| DF | Kevin Ten Eyck | FC Wichita | |
| DF | Kendell McFayden | FC Buffalo | |
| MF | Cyrus Saydee | Detroit City FC | |
| MF | Ruben Bover | New York Cosmos B | |
| MF | Matt Clare | FC Wichita | |
| FW | William Mellors-Blair | Detroit City FC | |
| FW | Ross Middlemiss | CD Aguiluchos USA | |
| FW | Jon Ander Ibarrondo | Myrtle Beach FC | |
| GK | Gregory Hartley | Chattanooga FC | |
| 2nd Team All NPSL | |||
|---|---|---|---|
| Position | Player | Club | |
| DF | Taylor Varnadore | Sonoma County Sol | |
| DF | Zach Schewee | Detroit City FC | |
| DF | Prince Bere | San Francisco Stompers | |
| DF | Pierre Elusma | Miami Fusion FC | |
| MF | Admir Suljevic | AFC Cleveland | |
| MF | Leo De Smedt | Chattanooga FC | |
| MF | Chris Daly | Sonoma County Sol | |
| FW | Mario Pinto | Joplin Demize | |
| FW | Nago Mbengue | Indiana Fire | |
| FW | Miguel Herlein | New York Cosmos B | |
| GK | John Connolly | Sacramento Gold | |