As was the case in 2015, the club contributes the highest number of players to the group set to board the plane to Japan, including five players set to make their second appearance on the sport's biggest stage.
There is an even split to the Glasgow contingent, after six forwards and six backs were selected in Townsend's playing group.
Scott Cummings' run of form in 2019 has seen him earn a place in the squad's second-row stocks, following his debut off the bench against France in Scotlandís opening Rugby World Cup warm-up match.
Gray and Wilson bring their invaluable experience and Test-match nous to the pack, combining for 95 caps between them as they prepare for their second Rugby World Cup.
Behind the scrum, both Horne brothers will be jetting off to Japan, as George joins elder sibling Peter on the flight to the Far East.
Ali Price will join the younger Horne as one of three scrum-halves in contention for a starting berth, whilst Adam Hastings follows in the footsteps of father Gavin and uncle Scott in representing Scotland at a Rugby World Cup.
The Glasgow representatives are completed by Seymour - who is just five tries away from the Scottish record shared by Ian Smith and Tony Stanger - and Sam Johnson, following the centre's successful return to international action in Saturday's win over Georgia.
Scotland open their 2019 Rugby World Cup campaign against Ireland in Yokohama on Sunday 22 September, with kick-off scheduled for 8.45am (UK time).
Scotland World Cup Squad
John Barclay (Edinburgh)
Simon Berghan (Edinburgh)
Fraser Brown (Glasgow Warriors)
Scott Cummings (Glasgow Warriors)
Allan Dell (London Irish)
Zander Fagerson (Glasgow Warriors)
Grant Gilchrist (Edinburgh)
Jonny Gray (Glasgow Warriors)
Stuart McInally (Edinburgh) CAPTAIN
Willem Nel (Edinburgh)
Gordon Reid (Ayrshire Bulls)
Jamie Ritchie (Edinburgh)
Blade Thomson (Scarlets)
Ben Toolis (Edinburgh)
George Turner (Glasgow Warriors)
Hamish Watson (Edinburgh)
Ryan Wilson (Glasgow Warriors)
Darcy Graham (Edinburgh)
Chris Harris (Gloucester)
Adam Hastings (Glasgow Warriors)
Stuart Hogg (Exeter Chiefs)
George Horne (Glasgow Warriors)
Pete Horne (Glasgow Warriors)
Sam Johnson (Glasgow Warriors)
Blair Kinghorn (Edinburgh)
Greig Laidlaw (Clermont Auvergne)
Sean Maitland (Saracens)
Ali Price (Glasgow Warriors)
Finn Russell (Racing 92)
Tommy Seymour (Glasgow Warriors)
Duncan Taylor (Saracens)