The 2017 Citi Open was a tennis tournament played on outdoor hard courts.

It was the 49th edition (for the men) and the 7th edition (for the women) of the Washington Open.

The event is part of the ATP World Tour 500 series of the 2017 ATP World Tour, and of the WTA International tournaments of the 2017 WTA Tour.

FitzGerald Tennis Center in Washington, D.C., United States, from July 31 to August 6, 2017.

1 Qualifiers prize money is also the Round of 64 prize money * per team The following players received wild cards into the main singles draw: The following player received entry using a protected ranking: The following players received entry from the singles qualifying draw: The following player received entry as a lucky loser: The following pairs received wildcards into the doubles main draw: The following pair received entry from the doubles qualifying draw: The following players received wild cards into the main singles draw: The following players received entry from the qualifying draw: The following pair received a wildcard into the doubles main draw: