In preparation for the 2019 FIBA World Cup, Canada Basketball began training camp on Monday, August 5 at the OVO Athletic Centre in Toronto.
The team announced the official training camp roster, which is down to 19 players after the original invite list consisted of 29 players. New York Knicks rookie R.J. Barrett and Denver Nuggets guard Jamal Murray will both be present for training camp but will be unable to participate in the World Cup due to injuries.
While he isn't listed on the official training camp roster, it has been reported that Memphis Grizzlies guard Dillon Brooks is also present at training camp but is currently working back to health after an injury-plagued 2018-19 season.
2019 Canada Senior Men's National Team Training Camp Attendees
| Name | Position | Height | Hometown | Previous/Current Club |
| R.J. Barrett* | Guard | 6'7" | Mississauga, ON | New York Knicks |
| Aaron Best | Guard | 6'4" | Scarborough, ON | Riesen Ludwigsburg (Germany) |
| Khem Birch | Centre | 6'9" | Montreal, QC | Orlando Magic |
| Chris Boucher | Centre | 6'10" | Montreal, QC | Toronto Raptors |
| Oshae Brissett | Forward | 6'8" | Mississauga, ON | Toronto Raptors |
| Melvin Ejim | Forward | 6'6" | Toronto, ON | Baloncesto Málaga (Spain) |
| Brady Heslip | Guard | 6'2" | Burlington, ON | Istanbul BBSK (Turkey) |
| Cory Joseph | Guard | 6'3" | Toronto, ON | Sacramento Kings |
| Kaza Kajami-Keane | Guard | 6'2" | Ajax, ON | Mitteldeutscher BC (Germany) |
| Jamal Murray* | Guard | 6'4" | Kitchener, ON | Denver Nuggets |
| Andrew Nembhard | Guard | 6'5" | Aurora, ON | Florida Gators (NCAA) |
| Duane Notice | Guard | 6'2" | Woodbridge, ON | Raptors 905 (G League) |
| Kelly Olynyk | Forward | 7'0" | Kamloops, BC | Miami Heat |
| Eugene Omoruyi | Forward | 6'7" | Rexdale, ON | Oregon Ducks (NCAA) |
| Kevin Pangos | Guard | 6'2" | Newmarket, ON | FC Barcelona Basketball (Spain) |
| Addison Patterson | Guard | 6'6" | Milton, ON | Bella Vista Prep (Arizona) |
| Phil Scrubb | Guard | 6'4" | Richmond, BC | Club Estudiantes (Spain) |
| Thomas Scrubb | Forward | 6'7" | Richmond, BC | SIG Strasbourg (France) |
| Kyle Wiltjer | Forward | 6'10" | Portland, OR | Turk Telecom (Turkey) |
Among the absences from the initial list of invitees are Nickeil Alexander-Walker, Brandon Clarke, Shai Gilgeous-Alexander, Mfiondu Kabengele, Trey Lyles, Dwight Powell, Nik Stauskas and Tristan Thompson.
Timberwolves forward Andrew Wiggins, who was not one of the original 29, will also not be participating with Canada this summer.
Led by head coach Nick Nurse, Canada will ramp up its preparation for the World Cup with exhibition games against Nigeria on August 7 in Toronto and August 9 in Winnipeg.
The team will then travel to take on the Australian National Team in Perth, Australia on August 16 and 17 before facing New Zealand's National Team on August 20 and 21 in Sydney, Australia. Canada will wrap up with an exhibition game against the United States National Team on August 26 in Sydney.
Canada opens group play of the 2019 World Cup in China on Sept 1 as it takes on Australia before facing Lithuania on September 3 and Senegal on September 5.