The 2018 Calgary National Bank Challenger was a professional tennis tournament played on indoor hard courts. It was the first edition of the tournament and part of the 2018 ATP Challenger Tour. It took place in Calgary, Canada.
Singles entrants Seeds Country Player Rank SeedJordan Thompson1051Ivo Karlović1172Jason Jung1233Adrián Menéndez Maceiras1324Casper Ruud1375Alex Bolt1556Jay Clarke1777Roberto Quiroz1908
Other entrants The following players received wildcards into the singles main draw: Steven Diez Alexis Galarneau Pavel Krainik Harrison Scott
The following players received entry into the singles main draw as alternates: Cem İlkel Stefan Kozlov
The following players received entry from the qualifying draw: Tom Fawcett Borna Gojo Vincent Millot Pablo Vivero González
The following player received entry as a lucky loser: Laurent Rochette
Champions Singles
Ivo Karlović def. Jordan Thompson 7–6(7–3), 6–3.
Doubles
Robert Galloway / Nathan Pasha def. Matt Reid / John-Patrick Smith 6–4, 4–6, [10–6].