I need to name 9 conference rooms in my corporate office that relate to a general theme...ideas?

Themes that exist already are NY street names, famous inventors, tropical islands, etc...

There has to be 9 different rooms with 1 common theme...

I think it would depend on the type of business your company is in. You'd want the names to align with your business; otherwise, names with no relevant association might not make sense to visitors.

To cite a few examples, travel-related companies tend to have destination-driven names for conference rooms, marketing/advertising firms might have themes surrounding creativity. Hotels generally go with "grand" names that exude royalty, elegance or well-known historical figures.

Start with this in mind, and the names might come to you rather easily. Hope this helps!

Planets. There is 9 planets.

Space and planets? i dunno thats a bit nerdy, or famous movies

There are 9 planets

how about famous big band musicians? dizzy gillespie, cab calloway, harry james, count basie, etc.

I've often seen them named after states with decorations like framed pictures in each room that depict the state that the room is named for.

what about the hawiian islands?

Pikes Place Market
Broadway
Field of Dreams
.....


this is difficult........ sorry, I cannot think of anything else.

How about flowers or if that is too feminine how about horses or cars small room could be the beetle and large one could be the Bentley or Cadillac suite.

Mountains or mountain ranges. (Rainier, Shasta, Denali/McKinley, Hood, etc.)
US rivers (Colorado, Columbia, Mississippi, Missouri, Potomac, etc.)
Constellations (Arcturus, Orion, Ursa Major, etc.) or stars.

How about famous authors? Shakespeare, Alcott, Hawthorne, Dickens etc.

How about Railroads?

Pennsylvania
New York Central
Reading

Santa Fe
Union Pacific
Southern Pacific

Wabash
Burlington Northern
Norfolk & Western

Or you could go with the modern equivilants.

How about insirational words, such as Challenge, progress, vision, strength, ...

Choose something that relates to your business. Product names, divisions, countries that your business is in. If it's a small business, choose local sites (such as your street reference), former company executives.

It's fairly subjective so make it align with the business, but keep it light.

All I can think of with the existence of NY street names is a complimentary of their past existences and what made the streets famous up to the present time. The theme could be within time clocks and architecture, mini structures of the existing corner of those streets in display cases. Old dollar currencies as well. Hope that's helpful.

How about Fidel Castro, Karl Marx, Mother Jones, Jos茅 Luis Rodr铆guez Zapatero, Che Guevara, Hugo Chavez, Martin Luther King, Malcolm X, Jane Addams. The common theme is Socialism. Sounds good!