How to name the perfect space bar
The space bar is a classic space opera setting for good reason: it concentrates diverse types in closed space, fosters casual encounters, allows exchange of information and goods. Its name must transmit three things: type (cantina, tavern, lounge), tone (dirty, elegant, neutral) and identity (reference to owner or anecdote). Mos Eisley Cantina has all three: cantina (type) + Mos Eisley (dirty place) + reputation.
The first test is the 'what you find when you enter' factor. A name like 'The Last Corner' suggests a worn bar at the edge of a station; 'Quark's' suggests a commercial place with visible owner; 'The Pulsar's Refuge' suggests a strange tavern with astronomical theme. Before choosing, decide which clientele frequents: smugglers, diplomats, maintenance engineers, touring artists, soldiers on leave. The name must attract the right type.
Consider location. A bar in transit station (frontier outpost) will have a rough functional name; one in orbital Capitol will have an elegant name with cultural references; one in mining colony will have a comic former-owner name; one in black market will have an opaque name only initiates decode. Star Wars, Mass Effect, The Expanse exemplify different bar contexts.
Conventions by type of space opera
Frontier space opera (Star Wars, Firefly, The Mandalorian) prefers displaced western names: 'Cantina', 'Saloon', 'Hangar Bar'. Names are short, practical and usually include geographic reference (Mos Eisley, Mos Espa). They work because the audience already has that mental western aesthetic.
Commercial-political space opera (DS9, Babylon 5, Mass Effect) prefers names with visible owner and established business tone: 'Quark's', 'The Promenade Lounge', 'Afterlife Club'. They suggest the bar is institution, part of the station's social ecosystem. The owner is usually a recurring character.
Philosophical space opera (The Expanse, Becky Chambers) prefers names evoking the human condition in space: 'The Tin Bucket', 'The Five Hundred', 'Wayfarer's End'. Names have melancholic or reflective weight. For space horror (Alien, Event Horizon), bars are rare but when they appear have oppressive names: 'The Black Gate', 'Last Stop'. Clarify which subgenre you're in before naming.
Common mistakes naming space bars
First: copying Mos Eisley. It's the most iconic space cantina and therefore most imitated. If your bar is called 'The Cantina of Something', you're in dangerous territory. Better invent your own geography with fresh sonority. Think: which moon? which nebula? which planet? The answer can give the name.
Second: too literal a name. 'Galactic Space Bar' is functionally correct but transmits no identity. The best names have play: double meaning, irony, oblique reference. The Tin Bucket is metaphor for the station's body; Afterlife is irony on real owner Aria T'Loak's name. Find double-layer meaning.
Third: ignoring narrative logistics. How many times will you mention the name? If your novel happens 60% in this bar, you need a name easy to say and memorable. 'Hostel of the Three-Fallen-Worlds' is showy once; in repeated oral use it tires. Better 'Three Worlds' as nickname. Fourth: not differentiating bars within the same universe. If your galaxy has five major bars, ensure they're distinguishable by ear. Star Trek differentiates Quark's, Forge, Crystal Palace, etc., with distinct sonorities.
The space bar as narrative microcosm
The space bar functions as Petri dish of your space opera. In it different civilizations meet, politics are discussed, deals closed, escapes planned. DS9 uses Quark's as narrative engine: every important negotiation passes through it. Mass Effect uses Afterlife as point of political and romantic tension. Your bar can be that same motor.
Consider the name from the regular customer's perspective. How do regulars vs tourists call it? Quark's Bar, Grill, Gaming House and Holosuite Arcade is the official name; but everyone in DS9 says 'Quark's'. That difference between formal name and nickname is free worldbuilding. Design both forms for your place.
For RPGs like Stars Without Number, Coriolis, Traveller or Rogue Trader, bars are hubs for players. Generate three-five before the campaign, give each distinctive owner, house specialty, resident danger, recurring rumor. Players will return to the one with most identity. Cowboy Bebop uses this in every episode: the bar of the day has unique atmosphere defining the case. Your table can benefit from the same technique.