2017 Città di Como Challenger

Country	Player	Rank1	Seed
ITA	Marco Cecchinato	101	1
POL	Jerzy Janowicz	108	2
SRB	Filip Krajinović	111	3
POR	Pedro Sousa	125	4
ESP	Roberto Carballés Baena	127	5
ESP	Guillermo García López	136	6
GER	Oscar Otte	145	7
FRA	Kenny de Schepper	147	8

• ¹ Rankings are as of 21 August 2017.^[1]

The following players received wildcards into the singles main draw:

• Riccardo Balzerani
• Alessandro Coppini
• Matteo Donati
• Julian Ocleppo

The following player received entry into the singles main draw as a special exempt:

• Elias Ymer

The following players received entry from the qualifying draw:

• Gianluca Di Nicola
• Lenny Hampel
• Constant Lestienne
• Corentin Moutet

The following players received entry as lucky losers:

• Federico Gaio
• Kamil Majchrzak

• Pedro Sousa def. Marco Cecchinato 1–6, 6–2, 6–4.

• Sander Arends / Antonio Šančić def. Aliaksandr Bury / Kevin Krawietz 7–6^(7–1), 6–2.