This is an attempt to list 'Starport Bar' names (and Franchise operations) from published Traveller material (GDW or Licencee). The listing is attempting to draw from as wide a base as possible.
Note to readers: 'Orphans SubSector' is one I created for Traveller Map which contains systems appearing in JTAS (and Space Gamer Magazine) which were given UWPs, but never placed in the OTU.
Brubecks - GURPS Traveller: Starports
A franchise set-up that offers a standardized experience, 200 units exist scattered across the Third Imperium and the Solomani Confederation in various A, B & C class ports, the writeup implies the franchise originated in the Solomani
Confederation and spread into the Third Imperium.
GenEric! Bar & Steakhouse - Mongoose Traveller: Referees Briefing 3 - Going Portside
Another franchise setup that offers a standardized experience.
Brewhouse Tavern - Mongoose Traveller: Referees Briefing 3 - Going Portside
Franchised MicroBrewery, specializes in 'local themed/sourced' food.
Landing Deck - Mongoose Traveller: Referees Briefing 3 - Going Portside
Starship themed bar. Description is of a one-off establishment rather than a franchise
Planetfall Bar & Grill - Mongoose Traveller: Referees Briefing 3 - Going Portside
Budget Bar, some establishments are part of a chain, others are simply using the name/concept without permission.
The Torpedo Bay - Mongoose Traveller: Referees Briefing 3 - Going Portside
Imperial Navy themed bar, implied to be a pseudo-franchise (e.g. the concept has been copied widely, but there is no franchising organization.)
None of the Mongoose writeups give any idea of what size of ports these would be most likely associated, my 'gut instinct' would be much the same as Brubecks (A, B & C).
'After The Fact' published in the Third Imperium fanzine, Issue 9
Eneri's Starport Bar & Grill
No specifics are given in the scenario other than it is located on Iilgan (Tobia 0309), which has a class C port.
The Imperial Fringe (Adventure 0)
Starhaven Tavern (Regina, Spinward Marches 1910)
Located near the 'employees gate' at Regina starport (Presumably the Downport), clientele largely made up of IISS personnel.
Twilights Peak (Adventure 3)
Planetfall Liberty (Jenghe, Spinward Marches 1810)
'Major Starmans Bar', located just outside the main gate to the starport.
Memory Alpha
Lone Star Bar (Latu, Corridor 1210)
Described as 'dingy'. In the scenario as published Latu is named 'Nocturne'.
A World On It's Own (Challenge 32)
Journey's End (Khirar, Ilelish 2208)
Located near the main
park in the capital's (Arkron) lower residential district (e.g. Not in
Startown.) Clientle largely made up of "...laborers and technicians..."
most of whom work at the planets Class B port, which is described as
surrounding the north, south and east sides of the capital.
Trail of the Sky Raiders (FASA Traveller Adventure 7)
Margayl's (Alzenei, Far Frontiers 1934)
Described as a '...small bar and lounge...' located in the capitals startown district. Characterized as being '...run down...'
Varnov's Landing (Nomael, Far Frontiers 1932)
Described as a "...typical startown dive...". (Has a Keith Illustration of the bar and barkeep.)