| Date: | February 10– 16 |
| Edition: | 39th |
| Category: | World Tour 250 |
| Draw: | 28S / 16D |
| Surface: | Hard |
| Prize Money: | $442,750 |
| Location: | Memphis, United States |
| Venue: | Racquet Club of Memphis |
| Champs: |  Kei Nishikori |
| Champd: |  Eric Butorac / Raven Klaasen |
| After Name: | Memphis Open |
| Main Name: | U.S. National Indoor Championships |
The 2014 U.S. National Indoor Tennis Championships was a 2014 ATP World Tour men's tennis tournament, played on indoor hard courts. The tournament from this year was downgraded from ATP World Tour 500 series to ATP World Tour 250 series. It was the 39th edition of the first American tournament of the year and took place at the Racquet Club of Memphis in Memphis, United States, from February 11 through February 17, 2014. First-seeded Kei Nishikori won his second consecutive singles title at the event.
See main article: 2014 U.S. National Indoor Tennis Championships – Singles.
Kei Nishikori defeated Ivo Karlović, 6–4, 7–6(7–0)See main article: 2014 U.S. National Indoor Tennis Championships – Doubles.
Eric Butorac / Raven Klaasen defeated Bob Bryan / Mike Bryan, 6–4, 6–4| width=70 | Country | width=175 | Player | Rank1 | Seed |
|---|---|---|---|---|---|
| Japan | Kei Nishikori | 17 | 1 | ||
 Spain | Feliciano López | 26 | 2 | ||
 Australia | Lleyton Hewitt | 40 | 3 | ||
| Lu Yen-hsun | 53 | 4 | |||
| Australia | Marinko Matosevic | 54 | 5 | ||
| Sam Querrey | 55 | 6 | |||
 Poland | Michał Przysiężny | 57 | 7 | ||
 Kazakhstan | Mikhail Kukushkin | 59 | 8 |
The following players received wildcards into the singles main draw:
The following player received entry as a special exempt:
The following players received entry from the qualifying draw:
Vasek Pospisil (back injury)
Dudi Sela
Janko Tipsarević| Country | Player | Country | Player | Rank1 | Seed | |
|---|---|---|---|---|---|---|
| Bob Bryan | Mike Bryan | 2 | 1 | |||
| Eric Butorac | Raven Klaasen | 64 | 2 | |||
 Mexico | Santiago González | Scott Lipsky | 71 | 3 | ||
| Australia | Samuel Groth |  Belarus | Max Mirnyi | 115 | 4 |
The following pairs received wildcards into the doubles main draw:
The following pair received entry as alternates:
Michał Przysiężny (back injury)
