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1.
A person from the country of Laos, a landlocked country in Southeast Asia between Vietname and Thailand.
-"Are you Chinese or Japanese?"
-"I'm Laotian."
-"You're the ocean? What ocean?"
-"Laotian. From Laos, Stupid. It's a landlocked country in Southeast Asia. It's between Vietnam and Thailand, okay? Population 4.7 million."
-"So are you Chinese or Japanese?"

From King of the Hill
by Poji July 31, 2005
 
2.
Person whose origin is from the country of Laos.
I'm not American, I'm Laotian.
by johnjames1231@hotmail.com December 20, 2003
 
3.
A name for the native peoples of Laos. btw, Lao people HATE being called "laotian", they much better preffer to be called "Lao."
Jao bpen koun Lao. (I am a laotian person)
by Kanitha September 23, 2007