The 2017 Davis Cup World Group play-offs were held from September 15 to 17. They were the main play-offs of the 2017 Davis Cup. The winners of the playoffs advanced to the 2018 Davis Cup World Group, and the losers were relegated to their respective Zonal Regions I.

Bold indicates team had qualified for the 2018 Davis Cup World Group.

Date: 15–17 September

The eight losing teams in the World Group first round ties and eight winners of the Zonal Group I final round ties competed in the World Group play-offs for spots in the 2018 World Group. The draw took place on April 11 in London.

More information Home team, Score ...

Home team	Score	Visiting team	Location	Venue	Door	Surface
Kazakhstan	3–2	Argentina	Astana	National Tennis Center	Indoor	Hard
Colombia	1–4	Croatia	Bogotá	Plaza de Toros la Santamaría	Outdoor	Clay
Switzerland	3–2	Belarus	Biel/Bienne	Swiss Tennis Arena	Indoor	Hard
Netherlands	3–2	Czech Republic	The Hague	Sportcampus Zuiderpark	Indoor	Clay
Portugal	2–3	Germany	Oeiras	Clube de Ténis do Jamor	Outdoor	Clay
Japan	3–1	Brazil	Osaka	Utsubo Tennis Center	Outdoor	Hard
Hungary	3–1	Russia	Budapest	Margaret Island Athletic Centre	Outdoor	Clay
Canada	3–2	India	Edmonton	Northlands Coliseum	Indoor	Hard

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•  Canada,  Croatia,  Germany,  Japan and   Switzerland will remain in the World Group in 2018.
•  Hungary,  Kazakhstan and  Netherlands are promoted to the World Group in 2018.
•  Belarus,  Brazil,  Colombia,  India and  Portugal will remain in Zonal Group I in 2018.
•  Argentina,  Czech Republic and  Russia are relegated to Zonal Group I in 2018.