The 2011 Natomas Men's Professional Tennis Tournament was a professional tennis tournament played on hard courts. It was the seventh edition of the tournament which was part of the 2011 ATP Challenger Tour. It took place in Sacramento, United States between 3 and 9 October 2011.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
| James Blake | 74 | 1 | ||
| Ivo Karlović | 77 | 2 | ||
| Sam Querrey | 119 | 3 | ||
| Bobby Reynolds | 120 | 4 | ||
 Canada | Vasek Pospisil | 125 | 5 | |
| Izak van der Merwe | 134 | 6 | ||
| Björn Phau | 148 | 7 | ||
 United Kingdom | James Ward | 155 | 8 |
The following players received wildcards into the singles main draw:
The following players received entry as a special exempt into the singles main draw:
The following players received entry from the qualifying draw:
The following players received entry from a lucky loser spot:
See main article: 2011 Natomas Men's Professional Tennis Tournament – Singles. Ivo Karlović def. 
James Blake, 6–4, 3–6, 6–4
See main article: 2011 Natomas Men's Professional Tennis Tournament – Doubles. 
Carsten Ball / Chris Guccione def. Nicholas Monroe / Jack Sock, 7–6(7–3), 1–6, [10–5]
