2017 Estoril Open
The 2017 Estoril Open was a professional men's tennis tournament played on outdoor clay courts. It was the third edition of the Estoril Open, and part of the ATP World Tour 250 series of the 2017 ATP World Tour. The event took place at the Clube de Ténis do Estoril in Cascais, Portugal, from 29 April to 7 May 2017.
Singles main-draw entrants
Seeds
- Rankings are as of April 24, 2017.
Other entrants
The following players received wildcards into the singles main draw:The following players received entry using a protected ranking into the singles main draw:
The following players received entry from the qualifying draw:
Withdrawals
;Before the tournament- Federico Delbonis →replaced by Guillermo García López
- Nick Kyrgios →replaced by Renzo Olivo
- Daniil Medvedev →replaced by Evgeny Donskoy
- Juan Mónaco →replaced by Gastão Elias
- Yoshihito Nishioka →replaced by Kevin Anderson
- Albert Ramos Viñolas →replaced by Yūichi Sugita
Doubles main-draw entrants
Seeds
- Rankings are as of April 24, 2017.